diff --git a/server/gitea/client.go b/server/gitea/client.go
index 8ce1598..ff5a7e0 100644
--- a/server/gitea/client.go
+++ b/server/gitea/client.go
@@ -250,7 +250,7 @@ func shouldRespBeSavedToCache(resp *http.Response) bool {
 		return false
 	}
 
-	contentLengRaw := resp.Header.Get(contentLengthHeader)
+	contentLengRaw := resp.Header.Get(ContentLengthHeader)
 	if contentLengRaw == "" {
 		return false
 	}