diff --git a/routers/web/repo/compare.go b/routers/web/repo/compare.go
index cfb0e859bd..93c224b7be 100644
--- a/routers/web/repo/compare.go
+++ b/routers/web/repo/compare.go
@@ -684,7 +684,7 @@ func PrepareCompareDiff(
 	ctx.Data["Username"] = ci.HeadUser.Name
 	ctx.Data["Reponame"] = ci.HeadRepo.Name
 
-	setCompareContext(ctx, beforeCommit, headCommit, ci.HeadUser.Name, repo.Name)
+	setCompareContext(ctx, beforeCommit, headCommit, ci.HeadUser.Name, ci.HeadRepo.Name)
 
 	return false
 }