diff --git a/Common/base.pri b/Common/base.pri
index 4059e87067..5976967e74 100644
--- a/Common/base.pri
+++ b/Common/base.pri
@@ -147,7 +147,8 @@ core_windows {
     DEFINES += WIN32 _WIN32
     DEFINES += NOMINMAX
 
-    core_debug:DEFINES += "_ITERATOR_DEBUG_LEVEL=0"
+    # use default _ITERATOR_DEBUG_LEVEL value
+    #core_debug:DEFINES += "_ITERATOR_DEBUG_LEVEL=0"
 }
 core_win_64 {
     DEFINES += WIN64 _WIN64