--- /dev/null
+diff --git a/Utilities/Python/vtkPython.h b/Utilities/Python/vtkPython.h
+index 166f24104..79ae1d371 100644
+--- a/Utilities/Python/vtkPython.h
++++ b/Utilities/Python/vtkPython.h
+@@ -53,7 +53,7 @@
+ #include <sys/stat.h>
+ #include <time.h>
+ #include <wchar.h>
+-#undef _DEBUG
++
+ #if defined(_MSC_VER)
+ #define _CRT_NOFORCE_MANIFEST 1
+ #endif