--- wine-mono-4.5.4/build-winemono.sh.orig	2014-11-14 18:02:57.810439383 +0100
+++ wine-mono-4.5.4/build-winemono.sh	2014-11-14 18:03:20.583738750 +0100
@@ -434,7 +434,7 @@
 
 build_msi ()
 {
-	MSIFILENAME=$OUTDIR/winemono.msi
+	MSIFILENAME=${MSIFILENAME:-winemono.msi}
     rm -rf cab-contents
     rm -f "$BUILDDIR/image.cab" "${MSIFILENAME}"