diff --git a/Mesh/filterElements.cpp b/Mesh/filterElements.cpp
index 912f37a9e48091bc0d8bbe42ef00d23030ea26f3..ad22a4d9fc44f4ec08c39afceb99db8c6b4f0f34 100644
--- a/Mesh/filterElements.cpp
+++ b/Mesh/filterElements.cpp
@@ -150,7 +150,7 @@ void filterColumns(std::vector<MElement*> &elem,
       //      delete c[i];
     }
   }
-  printf("%lu --> %lu\n",elem.size(),toKeep.size());
+  printf("%i --> %i\n",elem.size(),toKeep.size());
   elem = toKeep;
 }