diff --git a/backend/services/ender/builder/builder.go b/backend/services/ender/builder/builder.go
index 72edb2cbc..1a89f67b6 100644
--- a/backend/services/ender/builder/builder.go
+++ b/backend/services/ender/builder/builder.go
@@ -256,7 +256,7 @@ func (b *builder) handleMessage(message Message, messageID uint64) {
 			Status:    msg.Status,
 			Duration:  msg.Duration,
 		})
-		if msg.Status >= 300 {
+		if msg.Status >= 400 {
 			b.appendReadyMessage(&IssueEvent{
 				Type:          "bad_request",
 				MessageID:     messageID,