diff --git a/server/model/const.go b/server/model/const.go
index 078676b13..ac4ce0458 100644
--- a/server/model/const.go
+++ b/server/model/const.go
@@ -27,7 +27,7 @@ const (
 
 func ValidateWebhookEvent(s WebhookEvent) bool {
 	switch s {
-	case EventPush, EventPull, EventTag, EventDeploy, EventCron:
+	case EventPush, EventPull, EventTag, EventDeploy, EventCron, EventManual:
 		return true
 	default:
 		return false