diff --git a/src/lib/dbus/signature.ts b/src/lib/dbus/signature.ts
index 6d4a7f53d..912ae698e 100644
--- a/src/lib/dbus/signature.ts
+++ b/src/lib/dbus/signature.ts
@@ -62,4 +62,5 @@ export default function (signature: any): any {
     ret.push(parseOne(c))
     c = next()
   }
+  return ret
 }