diff --git a/configure/os/CONFIG.win32-x86.win32-x86-debug b/configure/os/CONFIG.win32-x86.win32-x86-debug
index 9144fe089..7f5ee95c0 100644
--- a/configure/os/CONFIG.win32-x86.win32-x86-debug
+++ b/configure/os/CONFIG.win32-x86.win32-x86-debug
@@ -7,7 +7,7 @@
 # Sites may override these definitions in CONFIG_SITE.win32-x86.win32-x86-debug
 #-------------------------------------------------------
 
-include $(CONFIG)/os/CONFIG.Common.win32-x86
+-include $(CONFIG)/os/CONFIG.Common.win32-x86
 include $(CONFIG)/os/CONFIG.win32-x86.win32-x86
 
 GNU = NO