diff --git a/Mesh_2/test/Mesh_2/test_double_map.cpp b/Mesh_2/test/Mesh_2/test_double_map.cpp
index a8e1597cf75..b10368878f5 100644
--- a/Mesh_2/test/Mesh_2/test_double_map.cpp
+++ b/Mesh_2/test/Mesh_2/test_double_map.cpp
@@ -71,7 +71,7 @@ int main(int argc, char** argv)
   std::cerr << "Assignment f2=f...\n";
   f2 = f; // check the assignment 
   std::cerr << "Auto-assignment f=f...\n";
-  f2 = f2; // check the auto-assignment 
+  void(f2 = f2); // check the auto-assignment 
   std::cerr << "Copy-construction...\n";
   Map f3(f); // check the copy constructor