diff --git a/models/webhook.go b/models/webhook.go
index 9f1b6131afc54..c769b7ca31a92 100644
--- a/models/webhook.go
+++ b/models/webhook.go
@@ -641,9 +641,9 @@ type HookTask struct {
 	RepoID          int64 `xorm:"INDEX"`
 	HookID          int64
 	UUID            string
-	Typ             HookTaskType
-	URL             string `xorm:"TEXT"`
-	Signature       string `xorm:"TEXT"`
+	Typ             HookTaskType `xorm:"char(16) 'type'"`
+	URL             string       `xorm:"TEXT"`
+	Signature       string       `xorm:"TEXT"`
 	api.Payloader   `xorm:"-"`
 	PayloadContent  string `xorm:"TEXT"`
 	HTTPMethod      string `xorm:"http_method"`