diff --git a/cmake/modules/Distutils.cmake b/cmake/modules/Distutils.cmake
index 24d1a50654..a9fac61196 100644
--- a/cmake/modules/Distutils.cmake
+++ b/cmake/modules/Distutils.cmake
@@ -43,7 +43,7 @@ function(distutils_add_cython_module name src)
     CC=${PY_CC}
     CXX=${PY_CXX}
     LDSHARED=${PY_LDSHARED}
-    OPT=\"-DNDEBUG -g -fwrapv -O2 -w\"
+    OPT=\"-DNDEBUG -fwrapv -w\"
     LDFLAGS=-L${CMAKE_LIBRARY_OUTPUT_DIRECTORY}
     CYTHON_BUILD_DIR=${CMAKE_CURRENT_BINARY_DIR}
     CEPH_LIBDIR=${CMAKE_LIBRARY_OUTPUT_DIRECTORY}