diff --git a/include/openmc/mesh.h b/include/openmc/mesh.h
index 57a8f8063d..c4a107e0bb 100644
--- a/include/openmc/mesh.h
+++ b/include/openmc/mesh.h
@@ -387,8 +387,8 @@ public:
 
   //! Set data for a score
   void set_score_data(const std::string& score,
-                      xt::xarray<double> values,
-                      xt::xarray<double> sum_sq) const;
+                      std::vector<double> values,
+                      std::vector<double> sum_sq) const;
 
   //! Write the mesh with any current tally data
   void write(std::string base_filename) const;
diff --git a/src/mesh.cpp b/src/mesh.cpp
index cf9df61791..89c0726de4 100644
--- a/src/mesh.cpp
+++ b/src/mesh.cpp
@@ -2081,13 +2081,13 @@ UnstructuredMesh::add_score(std::string score) const {
 
 void
 UnstructuredMesh::set_score_data(const std::string& score,
-                                 xt::xarray<double> values,
-                                 xt::xarray<double> sum_sq) const {
+                                 std::vector<double> values,
+                                 std::vector<double> sum_sq) const {
   auto score_tags = get_score_tags(score);
 
   moab::ErrorCode rval;
   // set the score value
-  rval = mbi_->tag_set_data(score_tags.first, ehs_, &values);
+  rval = mbi_->tag_set_data(score_tags.first, ehs_, &values.front());
   if (rval != moab::MB_SUCCESS) {
     std::stringstream msg;
     msg << "Failed to set the tally value for score '" << score << "' "
@@ -2096,7 +2096,7 @@ UnstructuredMesh::set_score_data(const std::string& score,
   }
 
   // set the error value
-  rval = mbi_->tag_set_data(score_tags.second, ehs_, &sum_sq);
+  rval = mbi_->tag_set_data(score_tags.second, ehs_, &sum_sq.front());
   if (rval != moab::MB_SUCCESS) {
     std::stringstream msg;
     msg << "Failed to set the tally value for score '" << score << "' "
diff --git a/src/tallies/tally.cpp b/src/tallies/tally.cpp
index f173b5a098..193769f13b 100644
--- a/src/tallies/tally.cpp
+++ b/src/tallies/tally.cpp
@@ -842,10 +842,14 @@ void Tally::accumulate()
       if (umesh) {
         for (auto score : scores_) {
           umesh->add_score(std::to_string(score));
+          auto values = xt::view(results_, xt::all(), 0, TallyResult::VALUE);
+          auto sum_sq = xt::view(results_, xt::all(), 0, TallyResult::SUM_SQ);
+          std::vector<double> vals_vec(values.begin(), values.end());
+          std::vector<double> sum_sq_vec(sum_sq.begin(), sum_sq.end());
           for (int i = 0; i < results_.shape()[0]; i++) {
             umesh->set_score_data(std::to_string(score),
-                                  xt::view(results_, xt::all(), 0, TallyResult::VALUE),
-                                  xt::view(results_, xt::all(), 0, TallyResult::SUM_SQ));
+                                  vals_vec,
+                                  sum_sq_vec);
           }
         }
         std::stringstream output_filename;