diff --git a/dlls/authz/Makefile.in b/dlls/authz/Makefile.in
index 129e2a364cd..91a070485bb 100644
--- a/dlls/authz/Makefile.in
+++ b/dlls/authz/Makefile.in
@@ -1,4 +1,6 @@
 MODULE    = authz.dll
 
+EXTRADLLFLAGS = -mno-cygwin
+
 C_SRCS = \
 	authz.c