diff --git  a/src/python/qgspythonutilsimpl.cpp  b/src/python/qgspythonutilsimpl.cpp
index e72acca2..20f5325e 100644
--- a/src/python/qgspythonutilsimpl.cpp
+++ b/src/python/qgspythonutilsimpl.cpp
@@ -1,4 +1,4 @@
-/***************************************************************************
+/***************************************************************************
     qgspythonutils.cpp - routines for interfacing Python
     ---------------------
     begin                : October 2006
@@ -17,7 +17,7 @@
 // otherwise issues some warnings
 #ifdef _MSC_VER
 #ifdef _DEBUG
-#undef _DEBUG
+//#undef _DEBUG
 #endif
 #endif
 #include <Python.h>