diff --git a/dlls/fltmgr.sys/Makefile.in b/dlls/fltmgr.sys/Makefile.in
index ba106a43831..87fe4c31328 100644
--- a/dlls/fltmgr.sys/Makefile.in
+++ b/dlls/fltmgr.sys/Makefile.in
@@ -1,5 +1,7 @@
 MODULE    = fltmgr.sys
 EXTRADLLFLAGS = -Wl,--subsystem,native
 
+EXTRADLLFLAGS = -mno-cygwin
+
 C_SRCS = \
 	main.c