diff --git a/dlls/msvcp100/Makefile.in b/dlls/msvcp100/Makefile.in
index 07da90389bd..258aff4b770 100644
--- a/dlls/msvcp100/Makefile.in
+++ b/dlls/msvcp100/Makefile.in
@@ -3,6 +3,8 @@ IMPORTS   = msvcr100
 EXTRADEFS = -D_MSVCP_VER=100
 PARENTSRC = ../msvcp90
 
+EXTRADLLFLAGS = -mno-cygwin
+
 C_SRCS = \
 	exception.c \
 	ios.c \