diff --git a/workers.go b/workers.go
index 2199809..20ae777 100644
--- a/workers.go
+++ b/workers.go
@@ -181,6 +181,7 @@ func TGCmdWorker(id int, b *tb.Bot, cmds <-chan TGCommand) {
 	log.Printf("TGCmdWorker[" + strconv.Itoa(id) + "] : Starting.")
 	for c := range cmds {
 		b, err := json.Marshal(c)
+		logOnError(err, "TGCmdWorker["+strconv.Itoa(id)+"] : Marshal(c)")
 		log.Printf("TGCmdWorker["+strconv.Itoa(id)+"] : new command.\n%s\n", string(b))
 	}
 	log.Printf("TGCmdWorker[" + strconv.Itoa(id) + "] : Closing.")