diff --git a/dlls/ieproxy/Makefile.in b/dlls/ieproxy/Makefile.in
index 00c5fd1eabd..661cf92e040 100644
--- a/dlls/ieproxy/Makefile.in
+++ b/dlls/ieproxy/Makefile.in
@@ -1,6 +1,8 @@
 MODULE = ieproxy.dll
 IMPORTS = uuid ole32 rpcrt4
 
+EXTRADLLFLAGS = -mno-cygwin
+
 IDL_SRCS = \
 	ieproxy_ieautomation.idl \
 	ieproxy_perhist.idl