diff --git a/dlls/olepro32/Makefile.in b/dlls/olepro32/Makefile.in
index 032fdbd482b..4ff5afcad4e 100644
--- a/dlls/olepro32/Makefile.in
+++ b/dlls/olepro32/Makefile.in
@@ -2,6 +2,8 @@ MODULE    = olepro32.dll
 IMPORTLIB = olepro32
 IMPORTS   = oleaut32
 
+EXTRADLLFLAGS = -mno-cygwin
+
 C_SRCS = olepro32stubs.c
 
 IDL_SRCS = olepro.idl