diff --git a/models/ssh_key.go b/models/ssh_key.go
index 9c839755c8b6..c2836e6885dd 100644
--- a/models/ssh_key.go
+++ b/models/ssh_key.go
@@ -732,7 +732,7 @@ func AddDeployKey(repoID int64, name, content string, readOnly bool) (*DeployKey
 
 	key, err := addDeployKey(sess, pkey.ID, repoID, name, pkey.Fingerprint, accessMode)
 	if err != nil {
-		return nil, fmt.Errorf("addDeployKey: %v", err)
+		return nil, err
 	}
 
 	return key, sess.Commit()
diff --git a/routers/repo/setting.go b/routers/repo/setting.go
index dc558ff209ec..ff6b07f8e0e7 100644
--- a/routers/repo/setting.go
+++ b/routers/repo/setting.go
@@ -586,7 +586,7 @@ func DeployKeysPost(ctx *context.Context, form auth.AddKeyForm) {
 	if err != nil {
 		ctx.Data["HasError"] = true
 		switch {
-		case models.IsErrKeyAlreadyExist(err):
+		case models.IsErrDeployKeyAlreadyExist(err):
 			ctx.Data["Err_Content"] = true
 			ctx.RenderWithErr(ctx.Tr("repo.settings.key_been_used"), tplDeployKeys, &form)
 		case models.IsErrKeyNameAlreadyUsed(err):