diff --git a/ArduCopter/GCS_Mavlink.cpp b/ArduCopter/GCS_Mavlink.cpp
index d9f97d9f78..f58cf32e58 100644
--- a/ArduCopter/GCS_Mavlink.cpp
+++ b/ArduCopter/GCS_Mavlink.cpp
@@ -2062,6 +2062,12 @@ void GCS_MAVLINK::handleMessage(mavlink_message_t* msg)
 #endif
         break;
 
+#if MAVLINK_PROTOCOL_VERSION >= 2
+    case MAVLINK_MSG_ID_SETUP_SIGNING:
+        handle_setup_signing(msg);
+        break;
+#endif
+        
     }     // end switch
 } // end handle mavlink