diff --git a/src/OpenMesh/Core/Mesh/Handles.hh b/src/OpenMesh/Core/Mesh/Handles.hh
index 94c11b70..a6e42a4e 100644
--- a/src/OpenMesh/Core/Mesh/Handles.hh
+++ b/src/OpenMesh/Core/Mesh/Handles.hh
@@ -164,7 +164,7 @@ namespace std {
 
 
 template <>
-class hash<OpenMesh::BaseHandle >
+struct hash<OpenMesh::BaseHandle >
   : public std::unary_function<OpenMesh::BaseHandle, std::size_t>
 {