diff --git a/include/openmc/tallies/tally_filter_azimuthal.h b/include/openmc/tallies/tally_filter_azimuthal.h
index 556cfff922..091fde7c97 100644
--- a/include/openmc/tallies/tally_filter_azimuthal.h
+++ b/include/openmc/tallies/tally_filter_azimuthal.h
@@ -19,11 +19,11 @@ namespace openmc {
 class AzimuthalFilter : public TallyFilter
 {
 public:
-  virtual std::string type() const override {return "azimuthal";}
+  std::string type() const override {return "azimuthal";}
 
-  virtual ~AzimuthalFilter() override = default;
+  ~AzimuthalFilter() = default;
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     auto bins = get_node_array<double>(node, "bins");
@@ -49,7 +49,7 @@ public:
     n_bins_ = bins_.size() - 1;
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -67,14 +67,14 @@ public:
     }
   }
 
-  virtual void
+  void
   to_statepoint(hid_t filter_group) const override
   {
     TallyFilter::to_statepoint(filter_group);
     write_dataset(filter_group, "bins", bins_);
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     std::stringstream out;
diff --git a/include/openmc/tallies/tally_filter_cell.h b/include/openmc/tallies/tally_filter_cell.h
index c3b39eeb86..ecef014a00 100644
--- a/include/openmc/tallies/tally_filter_cell.h
+++ b/include/openmc/tallies/tally_filter_cell.h
@@ -20,18 +20,18 @@ namespace openmc {
 class CellFilter : public TallyFilter
 {
 public:
-  virtual std::string type() const override {return "cell";}
+  std::string type() const override {return "cell";}
 
-  virtual ~CellFilter() override = default;
+  ~CellFilter() = default;
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     cells_ = get_node_array<int32_t>(node, "bins");
     n_bins_ = cells_.size();
   }
 
-  virtual void
+  void
   initialize() override
   {
     for (auto& c : cells_) {
@@ -50,7 +50,7 @@ public:
     }
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -64,7 +64,7 @@ public:
     }
   }
 
-  virtual void
+  void
   to_statepoint(hid_t filter_group) const override
   {
     TallyFilter::to_statepoint(filter_group);
@@ -73,7 +73,7 @@ public:
     write_dataset(filter_group, "bins", cell_ids);
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     return "Cell " + std::to_string(cells[cells_[bin-1]]->id_);
diff --git a/include/openmc/tallies/tally_filter_cellborn.h b/include/openmc/tallies/tally_filter_cellborn.h
index df77fe2b82..a7e5634dd0 100644
--- a/include/openmc/tallies/tally_filter_cellborn.h
+++ b/include/openmc/tallies/tally_filter_cellborn.h
@@ -12,9 +12,9 @@ namespace openmc {
 class CellbornFilter : public CellFilter
 {
 public:
-  virtual std::string type() const override {return "cellborn";}
+  std::string type() const override {return "cellborn";}
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -26,7 +26,7 @@ public:
     }
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     return "Birth Cell " + std::to_string(cells[cells_[bin-1]]->id_);
diff --git a/include/openmc/tallies/tally_filter_cellfrom.h b/include/openmc/tallies/tally_filter_cellfrom.h
index a45b977196..40bc382270 100644
--- a/include/openmc/tallies/tally_filter_cellfrom.h
+++ b/include/openmc/tallies/tally_filter_cellfrom.h
@@ -13,9 +13,9 @@ namespace openmc {
 class CellFromFilter : public CellFilter
 {
 public:
-  virtual std::string type() const override {return "cellfrom";}
+  std::string type() const override {return "cellfrom";}
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -29,7 +29,7 @@ public:
     }
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     return "Cell from " + std::to_string(cells[cells_[bin-1]]->id_);
diff --git a/include/openmc/tallies/tally_filter_distribcell.h b/include/openmc/tallies/tally_filter_distribcell.h
index 45894c8a5c..ab36d0b873 100644
--- a/include/openmc/tallies/tally_filter_distribcell.h
+++ b/include/openmc/tallies/tally_filter_distribcell.h
@@ -19,11 +19,11 @@ namespace openmc {
 class DistribcellFilter : public TallyFilter
 {
 public:
-  virtual std::string type() const override {return "distribcell";}
+  std::string type() const override {return "distribcell";}
 
-  virtual ~DistribcellFilter() override = default;
+  ~DistribcellFilter() = default;
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     auto cells = get_node_array<int32_t>(node, "bins");
@@ -33,7 +33,7 @@ public:
     cell_ = cells[0];
   }
 
-  virtual void
+  void
   initialize() override
   {
     auto search = cell_map.find(cell_);
@@ -48,7 +48,7 @@ public:
     }
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -75,14 +75,14 @@ public:
     }
   }
 
-  virtual void
+  void
   to_statepoint(hid_t filter_group) const override
   {
     TallyFilter::to_statepoint(filter_group);
     write_dataset(filter_group, "bins", cells[cell_]->id_);
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     auto map = cells[cell_]->distribcell_index_;
diff --git a/include/openmc/tallies/tally_filter_energyfunc.h b/include/openmc/tallies/tally_filter_energyfunc.h
index 87b40dc461..73f31008ad 100644
--- a/include/openmc/tallies/tally_filter_energyfunc.h
+++ b/include/openmc/tallies/tally_filter_energyfunc.h
@@ -22,7 +22,7 @@ namespace openmc {
 class EnergyFunctionFilter : public TallyFilter
 {
 public:
-  virtual std::string type() const override {return "energyfunction";}
+  std::string type() const override {return "energyfunction";}
 
   EnergyFunctionFilter()
     : TallyFilter {}
@@ -30,9 +30,9 @@ public:
     n_bins_ = 1;
   }
 
-  virtual ~EnergyFunctionFilter() override = default;
+  ~EnergyFunctionFilter() = default;
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     if (!settings::run_CE)
@@ -50,7 +50,7 @@ public:
     y_ = get_node_array<double>(node, "y");
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -67,7 +67,7 @@ public:
     }
   }
 
-  virtual void
+  void
   to_statepoint(hid_t filter_group) const override
   {
     TallyFilter::to_statepoint(filter_group);
@@ -75,7 +75,7 @@ public:
     write_dataset(filter_group, "y", y_);
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     std::stringstream out;
diff --git a/include/openmc/tallies/tally_filter_legendre.h b/include/openmc/tallies/tally_filter_legendre.h
index 42ee1a0f60..c72cd6a192 100644
--- a/include/openmc/tallies/tally_filter_legendre.h
+++ b/include/openmc/tallies/tally_filter_legendre.h
@@ -18,18 +18,18 @@ namespace openmc {
 class LegendreFilter : public TallyFilter
 {
 public:
-  virtual std::string type() const override {return "legendre";}
+  std::string type() const override {return "legendre";}
 
-  virtual ~LegendreFilter() override = default;
+  ~LegendreFilter() = default;
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     order_ = std::stoi(get_node_value(node, "order"));
     n_bins_ = order_ + 1;
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -41,14 +41,14 @@ public:
     }
   }
 
-  virtual void
+  void
   to_statepoint(hid_t filter_group) const override
   {
     TallyFilter::to_statepoint(filter_group);
     write_dataset(filter_group, "order", order_);
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     return "Legendre expansion, P" + std::to_string(bin - 1);
diff --git a/include/openmc/tallies/tally_filter_material.h b/include/openmc/tallies/tally_filter_material.h
index 41e551ef04..971788331d 100644
--- a/include/openmc/tallies/tally_filter_material.h
+++ b/include/openmc/tallies/tally_filter_material.h
@@ -20,18 +20,18 @@ namespace openmc {
 class MaterialFilter : public TallyFilter
 {
 public:
-  virtual std::string type() const override {return "material";}
+  std::string type() const override {return "material";}
 
-  virtual ~MaterialFilter() override = default;
+  ~MaterialFilter() = default;
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     materials_ = get_node_array<int32_t>(node, "bins");
     n_bins_ = materials_.size();
   }
 
-  virtual void
+  void
   initialize() override
   {
     for (auto& m : materials_) {
@@ -51,7 +51,7 @@ public:
     }
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -63,7 +63,7 @@ public:
     }
   }
 
-  virtual void
+  void
   to_statepoint(hid_t filter_group) const override
   {
     TallyFilter::to_statepoint(filter_group);
@@ -72,7 +72,7 @@ public:
     write_dataset(filter_group, "bins", material_ids);
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     return "Material " + std::to_string(materials[materials_[bin-1]]->id_);
diff --git a/include/openmc/tallies/tally_filter_mesh.h b/include/openmc/tallies/tally_filter_mesh.h
index ca97a9b680..c0c13c6554 100644
--- a/include/openmc/tallies/tally_filter_mesh.h
+++ b/include/openmc/tallies/tally_filter_mesh.h
@@ -21,11 +21,11 @@ namespace openmc {
 class MeshFilter : public TallyFilter
 {
 public:
-  virtual std::string type() const override {return "mesh";}
+  std::string type() const override {return "mesh";}
 
-  virtual ~MeshFilter() override = default;
+  ~MeshFilter() = default;
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     auto bins_ = get_node_array<int32_t>(node, "bins");
@@ -48,7 +48,7 @@ public:
     for (auto dim : meshes[mesh_]->shape_) n_bins_ *= dim;
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -63,14 +63,14 @@ public:
     }
   }
 
-  virtual void
+  void
   to_statepoint(hid_t filter_group) const override
   {
     TallyFilter::to_statepoint(filter_group);
     write_dataset(filter_group, "bins", meshes[mesh_]->id_);
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     auto& mesh = *meshes[mesh_];
diff --git a/include/openmc/tallies/tally_filter_meshsurface.h b/include/openmc/tallies/tally_filter_meshsurface.h
index 6588f646aa..abc5ef80d1 100644
--- a/include/openmc/tallies/tally_filter_meshsurface.h
+++ b/include/openmc/tallies/tally_filter_meshsurface.h
@@ -15,9 +15,9 @@ namespace openmc {
 class MeshSurfaceFilter : public MeshFilter
 {
 public:
-  virtual std::string type() const override {return "meshsurface";}
+  std::string type() const override {return "meshsurface";}
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     MeshFilter::from_xml(node);
@@ -25,7 +25,7 @@ public:
     for (auto dim : meshes[mesh_]->shape_) n_bins_ *= dim;
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -33,7 +33,7 @@ public:
     for (auto b : match.bins_) match.weights_.push_back(1.0);
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     auto& mesh = *meshes[mesh_];
diff --git a/include/openmc/tallies/tally_filter_mu.h b/include/openmc/tallies/tally_filter_mu.h
index be11e29362..93fc7020af 100644
--- a/include/openmc/tallies/tally_filter_mu.h
+++ b/include/openmc/tallies/tally_filter_mu.h
@@ -20,11 +20,11 @@ namespace openmc {
 class MuFilter : public TallyFilter
 {
 public:
-  virtual std::string type() const override {return "mu";}
+  std::string type() const override {return "mu";}
 
-  virtual ~MuFilter() override = default;
+  ~MuFilter() = default;
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     auto bins = get_node_array<double>(node, "bins");
@@ -50,7 +50,7 @@ public:
     n_bins_ = bins_.size() - 1;
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -61,14 +61,14 @@ public:
     }
   }
 
-  virtual void
+  void
   to_statepoint(hid_t filter_group) const override
   {
     TallyFilter::to_statepoint(filter_group);
     write_dataset(filter_group, "bins", bins_);
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     std::stringstream out;
diff --git a/include/openmc/tallies/tally_filter_polar.h b/include/openmc/tallies/tally_filter_polar.h
index 4916c30880..5dcd283403 100644
--- a/include/openmc/tallies/tally_filter_polar.h
+++ b/include/openmc/tallies/tally_filter_polar.h
@@ -19,11 +19,11 @@ namespace openmc {
 class PolarFilter : public TallyFilter
 {
 public:
-  virtual std::string type() const override {return "polar";}
+  std::string type() const override {return "polar";}
 
-  virtual ~PolarFilter() override = default;
+  ~PolarFilter() = default;
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     auto bins = get_node_array<double>(node, "bins");
@@ -49,7 +49,7 @@ public:
     n_bins_ = bins_.size() - 1;
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -67,14 +67,14 @@ public:
     }
   }
 
-  virtual void
+  void
   to_statepoint(hid_t filter_group) const override
   {
     TallyFilter::to_statepoint(filter_group);
     write_dataset(filter_group, "bins", bins_);
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     std::stringstream out;
diff --git a/include/openmc/tallies/tally_filter_sph_harm.h b/include/openmc/tallies/tally_filter_sph_harm.h
index e31c2ed65c..79577f67c7 100644
--- a/include/openmc/tallies/tally_filter_sph_harm.h
+++ b/include/openmc/tallies/tally_filter_sph_harm.h
@@ -21,11 +21,11 @@ enum class SphericalHarmonicsCosine {
 class SphericalHarmonicsFilter : public TallyFilter
 {
 public:
-  virtual std::string type() const override {return "sphericalharmonics";}
+  std::string type() const override {return "sphericalharmonics";}
 
-  virtual ~SphericalHarmonicsFilter() override = default;
+  ~SphericalHarmonicsFilter() = default;
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     order_ = std::stoi(get_node_value(node, "order"));
@@ -46,7 +46,7 @@ public:
     }
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -75,7 +75,7 @@ public:
     }
   }
 
-  virtual void
+  void
   to_statepoint(hid_t filter_group) const override
   {
     TallyFilter::to_statepoint(filter_group);
@@ -87,7 +87,7 @@ public:
     }
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     std::stringstream out;
diff --git a/include/openmc/tallies/tally_filter_sptl_legendre.h b/include/openmc/tallies/tally_filter_sptl_legendre.h
index 49415a5853..19176b42b0 100644
--- a/include/openmc/tallies/tally_filter_sptl_legendre.h
+++ b/include/openmc/tallies/tally_filter_sptl_legendre.h
@@ -22,11 +22,11 @@ enum class LegendreAxis {
 class SpatialLegendreFilter : public TallyFilter
 {
 public:
-  virtual std::string type() const override {return "spatiallegendre";}
+  std::string type() const override {return "spatiallegendre";}
 
-  virtual ~SpatialLegendreFilter() override = default;
+  ~SpatialLegendreFilter() = default;
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     order_ = std::stoi(get_node_value(node, "order"));
@@ -48,7 +48,7 @@ public:
     n_bins_ = order_ + 1;
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -76,7 +76,7 @@ public:
     }
   }
 
-  virtual void
+  void
   to_statepoint(hid_t filter_group) const override
   {
     TallyFilter::to_statepoint(filter_group);
@@ -92,7 +92,7 @@ public:
     write_dataset(filter_group, "max", max_);
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     std::stringstream out;
diff --git a/include/openmc/tallies/tally_filter_surface.h b/include/openmc/tallies/tally_filter_surface.h
index d8e4075f90..fa98be8bed 100644
--- a/include/openmc/tallies/tally_filter_surface.h
+++ b/include/openmc/tallies/tally_filter_surface.h
@@ -20,18 +20,18 @@ namespace openmc {
 class SurfaceFilter : public TallyFilter
 {
 public:
-  virtual std::string type() const override {return "surface";}
+  std::string type() const override {return "surface";}
 
-  virtual ~SurfaceFilter() override = default;
+  ~SurfaceFilter() = default;
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     surfaces_ = get_node_array<int32_t>(node, "bins");
     n_bins_ = surfaces_.size();
   }
 
-  virtual void
+  void
   initialize() override
   {
     for (auto& s : surfaces_) {
@@ -51,7 +51,7 @@ public:
     }
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -66,7 +66,7 @@ public:
     }
   }
 
-  virtual void
+  void
   to_statepoint(hid_t filter_group) const override
   {
     TallyFilter::to_statepoint(filter_group);
@@ -75,7 +75,7 @@ public:
     write_dataset(filter_group, "bins", surface_ids);
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     return "Surface " + std::to_string(surfaces[surfaces_[bin-1]]->id_);
diff --git a/include/openmc/tallies/tally_filter_universe.h b/include/openmc/tallies/tally_filter_universe.h
index 930856c6a2..9654f7625e 100644
--- a/include/openmc/tallies/tally_filter_universe.h
+++ b/include/openmc/tallies/tally_filter_universe.h
@@ -20,18 +20,18 @@ namespace openmc {
 class UniverseFilter : public TallyFilter
 {
 public:
-  virtual std::string type() const override {return "universe";}
+  std::string type() const override {return "universe";}
 
-  virtual ~UniverseFilter() override = default;
+  ~UniverseFilter() = default;
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     universes_ = get_node_array<int32_t>(node, "bins");
     n_bins_ = universes_.size();
   }
 
-  virtual void
+  void
   initialize() override
   {
     for (auto& u : universes_) {
@@ -51,7 +51,7 @@ public:
     }
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -64,7 +64,7 @@ public:
     }
   }
 
-  virtual void
+  void
   to_statepoint(hid_t filter_group) const override
   {
     TallyFilter::to_statepoint(filter_group);
@@ -73,7 +73,7 @@ public:
     write_dataset(filter_group, "bins", universe_ids);
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     return "Universe " + std::to_string(universes[universes_[bin-1]]->id_);
diff --git a/include/openmc/tallies/tally_filter_zernike.h b/include/openmc/tallies/tally_filter_zernike.h
index c074d171fa..397750ebda 100644
--- a/include/openmc/tallies/tally_filter_zernike.h
+++ b/include/openmc/tallies/tally_filter_zernike.h
@@ -19,11 +19,11 @@ namespace openmc {
 class ZernikeFilter : public TallyFilter
 {
 public:
-  virtual std::string type() const override {return "zernike";}
+  std::string type() const override {return "zernike";}
 
-  virtual ~ZernikeFilter() override = default;
+  ~ZernikeFilter() = default;
 
-  virtual void
+  void
   from_xml(pugi::xml_node node) override
   {
     order_ = std::stoi(get_node_value(node, "order"));
@@ -33,7 +33,7 @@ public:
     calc_n_bins();
   }
 
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -54,7 +54,7 @@ public:
     }
   }
 
-  virtual void
+  void
   to_statepoint(hid_t filter_group) const override
   {
     TallyFilter::to_statepoint(filter_group);
@@ -64,7 +64,7 @@ public:
     write_dataset(filter_group, "r", r_);
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     std::stringstream out;
@@ -92,11 +92,9 @@ public:
 class ZernikeRadialFilter : public ZernikeFilter
 {
 public:
-  virtual std::string type() const override {return "zernikeradial";}
+  std::string type() const override {return "zernikeradial";}
 
-  virtual ~ZernikeRadialFilter() override = default;
-
-  virtual void
+  void
   get_all_bins(Particle* p, int estimator, TallyFilterMatch& match)
   const override
   {
@@ -116,13 +114,13 @@ public:
     }
   }
 
-  virtual std::string
+  std::string
   text_label(int bin) const override
   {
     return "Zernike expansion, Z" + std::to_string(2*(bin-1)) + ",0";
   }
 
-  virtual void calc_n_bins() override {n_bins_ = order_ / 2 + 1;}
+  void calc_n_bins() override {n_bins_ = order_ / 2 + 1;}
 };
 
 } // namespace openmc