diff --git a/lib/service/handlers.js b/lib/service/handlers.js
index bdc3a2f..4719210 100644
--- a/lib/service/handlers.js
+++ b/lib/service/handlers.js
@@ -273,11 +273,11 @@ function handleMessage (msg, bus) {
     signature
   } = msg;
 
-  const ifaceName = msg.interface;
+  let ifaceName = msg.interface;
 
   signature = signature || '';
 
-  if (handleStdIfaces(bus, msg)) {
+  if (ifaceName && handleStdIfaces(bus, msg)) {
     return true;
   }
 
@@ -286,6 +286,9 @@ function handleMessage (msg, bus) {
   }
 
   const obj = bus._getServiceObject(path);
+  if (!ifaceName && Object.keys(obj.interfaces).length > 0){
+	  ifaceName = Object.keys(obj.interfaces)[0];
+  }
   const iface = obj.interfaces[ifaceName];
 
   if (!iface) {