diff --git a/modules/indexer/code/indexer.go b/modules/indexer/code/indexer.go
index 04d556f541..3f9461cd0e 100644
--- a/modules/indexer/code/indexer.go
+++ b/modules/indexer/code/indexer.go
@@ -38,6 +38,8 @@ func Init() {
 		return
 	}
 
+	initQueue(setting.Indexer.UpdateQueueLength)
+
 	ctx, cancel := context.WithCancel(context.Background())
 
 	graceful.GetManager().RunAtTerminate(ctx, func() {
diff --git a/modules/indexer/code/queue.go b/modules/indexer/code/queue.go
index 82cd8ded53..4eeb6ac7d4 100644
--- a/modules/indexer/code/queue.go
+++ b/modules/indexer/code/queue.go
@@ -21,8 +21,11 @@ type repoIndexerOperation struct {
 
 var repoIndexerOperationQueue chan repoIndexerOperation
 
+func initQueue(queueLength int) {
+	repoIndexerOperationQueue = make(chan repoIndexerOperation, queueLength)
+}
+
 func processRepoIndexerOperationQueue(indexer Indexer) {
-	repoIndexerOperationQueue = make(chan repoIndexerOperation, setting.Indexer.UpdateQueueLength)
 	for {
 		select {
 		case op := <-repoIndexerOperationQueue: