diff --git a/dlls/rtutils/Makefile.in b/dlls/rtutils/Makefile.in
index fb49dfceb24..d778852c9d4 100644
--- a/dlls/rtutils/Makefile.in
+++ b/dlls/rtutils/Makefile.in
@@ -1,6 +1,8 @@
 MODULE    = rtutils.dll
 IMPORTLIB = rtutils
 
+EXTRADLLFLAGS = -mno-cygwin
+
 C_SRCS = \
 	main.c \
 	tracing.c