diff --git a/td.go b/td.go
index 28f07ac..bf7c2ff 100644
--- a/td.go
+++ b/td.go
@@ -64,6 +64,8 @@ func ListenMQ(c *tdlib.Client, msgs <-chan TGCommand) {
 
 				MQCWMsgQueue <- r
 			}
+		default:
+			log.Printf("ListenMQ : No handler for command %d.\n", m.Type)
 		}
 	}
 }