diff --git a/Surface_mesh_topology/test/Surface_mesh_topology/CMakeLists.txt b/Surface_mesh_topology/test/Surface_mesh_topology/CMakeLists.txt
index 76e522001ef..36cc15870a8 100644
--- a/Surface_mesh_topology/test/Surface_mesh_topology/CMakeLists.txt
+++ b/Surface_mesh_topology/test/Surface_mesh_topology/CMakeLists.txt
@@ -22,7 +22,7 @@ endif()
 # add_definitions(-DCGAL_TRACE_PATH_TESTS)
 # add_definitions(-DCGAL_TRACE_CMAP_TOOLS)
 # add_definitions("-Wall -Wextra")
-add_definitions("-D_GLIBCXX_DEBUG")
+# add_definitions("-D_GLIBCXX_DEBUG")
 
 set(SOURCE_FILES
   fundamental_group_of_the_circle.cpp