diff --git a/include/openmc/mgxs_interface.h b/include/openmc/mgxs_interface.h
index 0c1091c4b..16d30606e 100644
--- a/include/openmc/mgxs_interface.h
+++ b/include/openmc/mgxs_interface.h
@@ -45,8 +45,8 @@ struct MgxsInterface
   MgxsInterface(const std::string& path_cross_sections,
                 const std::vector<std::string> xs_to_read,
                 const std::vector<std::vector<double>> xs_temps);
-  void setNuclidesToRead(std::vector<std::string> arg_xs_to_read);
-  void setNuclideTemperaturesToRead(std::vector<std::vector<double>> xs_temps);
+  void set_nuclides_to_read(std::vector<std::string> arg_xs_to_read);
+  void set_nuclide_temperatures_to_read(std::vector<std::vector<double>> xs_temps);
 
   void init();
 
@@ -59,7 +59,7 @@ struct MgxsInterface
 
   // Reads just the header of the cross sections file, to find
   // min & max energies as well as the available XS
-  void readHeader(const std::string& path_cross_sections);
+  void read_header(const std::string& path_cross_sections);
 };
 
 namespace data {
@@ -69,14 +69,14 @@ namespace data {
 // Puts available XS in MGXS file to globals so that when
 // materials are read, the MGXS specified in a material can
 // be ensured to be present in the available data.
-void putMgxsHeaderDataToGlobals();
+void put_mgxs_header_data_to_globals();
 
 // Set which nuclides and temperatures are to be read on
 // mgInterface through global data
-void setMgInterfaceNuclidesAndTemps();
+void set_mg_interface_nuclides_and_temps();
 
 // After macro XS have been read, materials can be marked as fissionable
-void markFissionableMgxsMaterials();
+void mark_fissionable_mgxs_materials();
 
 //==============================================================================
 // Mgxs tracking/transport/tallying interface methods
diff --git a/src/cross_sections.cpp b/src/cross_sections.cpp
index 84596f615..0949a9890 100644
--- a/src/cross_sections.cpp
+++ b/src/cross_sections.cpp
@@ -155,8 +155,8 @@ void read_cross_sections_xml()
   if (settings::run_CE) {
     read_ce_cross_sections_xml();
   } else {
-    data::mgInterface.readHeader(settings::path_cross_sections);
-    putMgxsHeaderDataToGlobals();
+    data::mgInterface.read_header(settings::path_cross_sections);
+    put_mgxs_header_data_to_globals();
   }
 
   // Establish mapping between (type, material) and index in libraries
diff --git a/src/initialize.cpp b/src/initialize.cpp
index 2d40a4392..513ee62f5 100644
--- a/src/initialize.cpp
+++ b/src/initialize.cpp
@@ -260,9 +260,9 @@ void read_input_xml()
       read_ce_cross_sections(nuc_temps, thermal_temps);
     } else {
       // Create material macroscopic data for MGXS
-      setMgInterfaceNuclidesAndTemps();
+      set_mg_interface_nuclides_and_temps();
       data::mgInterface.init();
-      markFissionableMgxsMaterials();
+      mark_fissionable_mgxs_materials();
     }
     simulation::time_read_xs.stop();
   }
diff --git a/src/mgxs_interface.cpp b/src/mgxs_interface.cpp
index 59670cb34..41c6519db 100644
--- a/src/mgxs_interface.cpp
+++ b/src/mgxs_interface.cpp
@@ -30,19 +30,19 @@ MgxsInterface::MgxsInterface(const std::string& path_cross_sections,
                              const std::vector<std::string> xs_to_read,
                              const std::vector<std::vector<double>> xs_temps)
 {
-  readHeader(path_cross_sections);
-  setNuclidesToRead(xs_to_read);
-  setNuclideTemperaturesToRead(xs_temps);
+  read_header(path_cross_sections);
+  set_nuclides_to_read(xs_to_read);
+  set_nuclide_temperatures_to_read(xs_temps);
   init();
 }
 
 // Should these perhaps unnecessary setters be lumped into one?
-void MgxsInterface::setNuclidesToRead(std::vector<std::string> arg_xs_to_read)
+void MgxsInterface::set_nuclides_to_read(std::vector<std::string> arg_xs_to_read)
 { 
   // Check to remove all duplicates
   xs_to_read = arg_xs_to_read;
 }
-void MgxsInterface::setNuclideTemperaturesToRead(std::vector<std::vector<double>> xs_temps)
+void MgxsInterface::set_nuclide_temperatures_to_read(std::vector<std::vector<double>> xs_temps)
 {
   xs_temps_to_read = xs_temps;
   if (xs_to_read.size() != xs_temps.size())
@@ -182,7 +182,7 @@ std::vector<std::vector<double>> MgxsInterface::get_mat_kTs()
 
 //==============================================================================
 
-void MgxsInterface::readHeader(const std::string& path_cross_sections)
+void MgxsInterface::read_header(const std::string& path_cross_sections)
 {
   // Save name of HDF5 file to be read to struct data
   cross_sections_path = path_cross_sections;
@@ -231,7 +231,7 @@ void MgxsInterface::readHeader(const std::string& path_cross_sections)
   file_close(file_id);
 }
 
-void putMgxsHeaderDataToGlobals()
+void put_mgxs_header_data_to_globals()
 {
   // Get the minimum and maximum energies
   int neutron = static_cast<int>(Particle::Type::neutron);
@@ -249,7 +249,7 @@ void putMgxsHeaderDataToGlobals()
   }
 }
 
-void setMgInterfaceNuclidesAndTemps()
+void set_mg_interface_nuclides_and_temps()
 {
   // Get temperatures from global data
   std::vector<std::vector<double>> these_nuc_temps(data::nuclide_map.size());
@@ -280,7 +280,7 @@ void setMgInterfaceNuclidesAndTemps()
   }
 }
 
-void markFissionableMgxsMaterials()
+void mark_fissionable_mgxs_materials()
 {
   // Loop over all files
   for (const auto& mat : model::materials) {