diff --git a/include/openmc/dagmc.h b/include/openmc/dagmc.h
index 64fb9833c2..4a129ef095 100644
--- a/include/openmc/dagmc.h
+++ b/include/openmc/dagmc.h
@@ -2,6 +2,10 @@
 #ifndef OPENMC_DAGMC_H
 #define OPENMC_DAGMC_H
 
+namespace openmc {
+extern "C" const bool dagmc_enabled;
+}
+
 #ifdef DAGMC
 
 #include "DagMC.hpp"
@@ -10,12 +14,6 @@
 
 namespace openmc {
 
-//==============================================================================
-// Global variables
-//==============================================================================
-
-extern "C" const bool dagmc_enabled;
-
 namespace model {
 
 extern moab::DagMC* DAG;
@@ -30,6 +28,7 @@ extern "C" void load_dagmc_geometry();
 extern "C" void free_memory_dagmc();
 extern "C" pugi::xml_document* read_uwuw_materials();
 bool get_uwuw_materials_xml(std::string& s);
+
 } // namespace openmc
 
 #endif // DAGMC