diff --git a/tools/deploy-mac b/tools/deploy-mac
index 193b2257..d5cd6cb1 100755
--- a/tools/deploy-mac
+++ b/tools/deploy-mac
@@ -12,4 +12,8 @@ mkdir bin/XaoS.app/Contents/Resources/examples/
 cp examples/*/* bin/XaoS.app/Contents/Resources/examples/
 cp -R catalogs bin/XaoS.app/Contents/Resources/
 cp -R tutorial bin/XaoS.app/Contents/Resources/
-$MACDEPLOYQT bin/XaoS.app -dmg
+if [ -z "$1" ]; then
+	$MACDEPLOYQT bin/XaoS.app -dmg
+else
+	$MACDEPLOYQT bin/XaoS.app -dmg -codesign="$1"
+fi