diff --git a/controllers/namespace_controller.go b/controllers/namespace_controller.go
index 79b24e9..2059e29 100644
--- a/controllers/namespace_controller.go
+++ b/controllers/namespace_controller.go
@@ -277,7 +277,7 @@ func appendRepos(repo_list []string, found_repos []string) []string {
 		check[repo] = true
 	}
 
-	for repo, _ := range check {
+	for repo := range check {
 		res = append(res, repo)
 	}