diff --git a/routers/web/repo/compare.go b/routers/web/repo/compare.go
index 8b99dd95da..94e0c04394 100644
--- a/routers/web/repo/compare.go
+++ b/routers/web/repo/compare.go
@@ -407,6 +407,7 @@ func ParseCompareInfo(ctx *context.Context) *common.CompareInfo {
 			ctx.ServerError("RepositoryFromRequestContextOrOpen", err)
 			return nil
 		}
+		// if it's not the same git repo, the HeadGitRepo should be closed out of the function
 	} else {
 		ctx.NotFound(nil)
 		return nil