diff --git a/kernel/model/repository.go b/kernel/model/repository.go
index 374b37b42..8c9fe65a8 100644
--- a/kernel/model/repository.go
+++ b/kernel/model/repository.go
@@ -526,7 +526,7 @@ func CheckoutRepo(id string) (err error) {
 	Conf.Save()
 
 	if util.IsMutexLocked(&syncLock) {
-		err = errors.New("Sync is running, please try again later")
+		err = errors.New("sync is running, please try again later")
 		return
 	}