diff --git a/include/openmc/mesh.h b/include/openmc/mesh.h
index 9a0b5d5b8..52f64701b 100644
--- a/include/openmc/mesh.h
+++ b/include/openmc/mesh.h
@@ -359,7 +359,7 @@ public:
   void to_hdf5(hid_t group) const override;
 
   array<vector<double>, 3> grid_;
-  array<double, 3> origin;
+  array<double, 3> origin_;
 
 
   int set_grid();