diff --git a/include/openmc/cell.h b/include/openmc/cell.h
index d695477218..1a549e4498 100644
--- a/include/openmc/cell.h
+++ b/include/openmc/cell.h
@@ -111,7 +111,7 @@ public:
   std::vector<int32_t> offset_;  //!< Distribcell offset table
 
   explicit Cell(pugi::xml_node cell_node);
-  inline Cell() {};
+  Cell() {};
   
   //! Determine if a cell contains the particle at a given location.
   //!