diff --git a/dlls/dhcpcsvc/Makefile.in b/dlls/dhcpcsvc/Makefile.in
index 112f1a8a253..435cbfa410d 100644
--- a/dlls/dhcpcsvc/Makefile.in
+++ b/dlls/dhcpcsvc/Makefile.in
@@ -1,3 +1,5 @@
 MODULE = dhcpcsvc.dll
 
+EXTRADLLFLAGS = -mno-cygwin
+
 C_SRCS = dhcpcsvc.c