--- a/coreconf/WIN32.mk
+++ b/coreconf/WIN32.mk
@@ -99,17 +99,17 @@ XP_DEFINE   += -DXP_PC
 ifdef NS_USE_GCC
 LIB_SUFFIX   = a
 else
 LIB_SUFFIX   = lib
 endif
 DLL_SUFFIX   = dll
 
 ifdef NS_USE_GCC
-    OS_CFLAGS += -mwindows -mms-bitfields -Werror
+    OS_CFLAGS += -mwindows -mms-bitfields
     _GEN_IMPORT_LIB=-Wl,--out-implib,$(IMPORT_LIBRARY)
     DLLFLAGS  += -mwindows -o $@ -shared -Wl,--export-all-symbols $(if $(IMPORT_LIBRARY),$(_GEN_IMPORT_LIB))
     ifdef BUILD_OPT
 	ifeq (11,$(ALLOW_OPT_CODE_SIZE)$(OPT_CODE_SIZE))
 		OPTIMIZER += -Os
 	else
 		OPTIMIZER += -O2
 	endif