diff --git a/Surface_mesh_simplification/test/Surface_mesh_simplification/test_edge_profile_link.cpp b/Surface_mesh_simplification/test/Surface_mesh_simplification/test_edge_profile_link.cpp
index 32770928602..170f785546f 100644
--- a/Surface_mesh_simplification/test/Surface_mesh_simplification/test_edge_profile_link.cpp
+++ b/Surface_mesh_simplification/test/Surface_mesh_simplification/test_edge_profile_link.cpp
@@ -65,7 +65,7 @@ void test(const char* fname)
 {
   Mesh m;
   std::ifstream input(fname);
-  assert( bool(input) );
+  assert( ! input.bad()) );
   input >> m;
   assert(num_vertices(m)!=0);
   A a;