diff --git a/dlls/traffic/Makefile.in b/dlls/traffic/Makefile.in
index cbed340b05f..e823eb380cb 100644
--- a/dlls/traffic/Makefile.in
+++ b/dlls/traffic/Makefile.in
@@ -1,4 +1,6 @@
 MODULE    = traffic.dll
 
+EXTRADLLFLAGS = -mno-cygwin
+
 C_SRCS = \
 	traffic_main.c