--- winbuild/MakefileBuild.vc
+++ winbuild/MakefileBuild.vc
@@ -60,7 +60,7 @@
 !ELSE
 CC_NODEBUG  = $(CC) /O2 /DNDEBUG
 CC_DEBUG    = $(CC) /Od /D_DEBUG /RTC1 /Z7 /LDd
-CFLAGS      = /I. /I ../lib /I../include /nologo /W4 /wd4127 /EHsc /DWIN32 /FD /c /DBUILDING_LIBCURL $(SOLARINC)
+CFLAGS      = /I. /I ../lib /I../include /nologo /W4 /wd4127 /EHsc /DWIN32 /c /DBUILDING_LIBCURL $(SOLARINC)
 !ENDIF
 
 LFLAGS     = /nologo /machine:$(MACHINE)