diff --git a/dlls/d3dim/Makefile.in b/dlls/d3dim/Makefile.in
index d1334bb5333..1acc05440cc 100644
--- a/dlls/d3dim/Makefile.in
+++ b/dlls/d3dim/Makefile.in
@@ -1,5 +1,7 @@
 MODULE    = d3dim.dll
 
+EXTRADLLFLAGS = -mno-cygwin
+
 C_SRCS = d3dim_main.c
 
 RC_SRCS = version.rc