diff --git a/tools/mac-libs.sh b/tools/mac-libs.sh
index 615cba63..2a4addec 100755
--- a/tools/mac-libs.sh
+++ b/tools/mac-libs.sh
@@ -98,8 +98,8 @@ codesign -s - --deep -f "$app"
 
 if [[ $build_dmg == 1 ]]; then
 	mkdir dmg
-	cp -r "$app" dmg/
+	cp -a "$app" dmg/
 	ln -s /Applications dmg/Applications
-	hdiutil create -volname melonDS -srcfolder dmg -ov -format UDBZ melonDS.dmg
+	hdiutil create -fs HFS+ -volname melonDS -srcfolder dmg -ov -format UDBZ melonDS.dmg
 	rm -r dmg
 fi