diff --git a/Makefile b/Makefile
index be8c171..a296726 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,6 @@
+build:
+	go build
+
 farm001:
 	./go-nsupdate \
 		--tsig-algorithm=hmac-sha512 \
diff --git a/main.go b/main.go
index a6c2733..4706e3e 100644
--- a/main.go
+++ b/main.go
@@ -91,8 +91,8 @@ func main() {
 	log.Printf("wait...")
 
 	if err := update.Done(); err != nil {
-		log.Printf("update done: %v", err)
+		log.Printf("update failed: %v", err)
 	} else {
-		log.Printf("update done")
+		log.Printf("update worked")
 	}
 }
diff --git a/update.go b/update.go
index 2e37108..646a381 100644
--- a/update.go
+++ b/update.go
@@ -228,6 +228,8 @@ func (u *Update) run() {
 			retryTimer.Reset(retryTimeout)
 
 			log.Printf("update retry in %v...", retryTimeout)
+			log.Printf("only try once")
+			return
 		}
 	}
 }