diff --git a/routers/web/repo/pull_review.go b/routers/web/repo/pull_review.go
index 217f2dea6d..f84510b39d 100644
--- a/routers/web/repo/pull_review.go
+++ b/routers/web/repo/pull_review.go
@@ -156,7 +156,8 @@ func UpdateResolveConversation(ctx *context.Context) {
 func renderConversation(ctx *context.Context, comment *issues_model.Comment, origin string) {
 	ctx.Data["PageIsPullFiles"] = origin == "diff"
 
-	comments, err := issues_model.FetchCodeCommentsByLine(ctx, comment.Issue, ctx.Doer, comment.TreePath, comment.Line, ctx.Data["ShowOutdatedComments"].(bool))
+	showOutdatedComments := origin == "timeline" || ctx.Data["ShowOutdatedComments"].(bool)
+	comments, err := issues_model.FetchCodeCommentsByLine(ctx, comment.Issue, ctx.Doer, comment.TreePath, comment.Line, showOutdatedComments)
 	if err != nil {
 		ctx.ServerError("FetchCodeCommentsByLine", err)
 		return
diff --git a/routers/web/repo/pull_review_test.go b/routers/web/repo/pull_review_test.go
index 65019af40b..7e6594774a 100644
--- a/routers/web/repo/pull_review_test.go
+++ b/routers/web/repo/pull_review_test.go
@@ -68,9 +68,9 @@ func TestRenderConversation(t *testing.T) {
 		renderConversation(ctx, preparedComment, "timeline")
 		assert.Contains(t, resp.Body.String(), `<div id="code-comments-`)
 	})
-	run("timeline without outdated", func(t *testing.T, ctx *context.Context, resp *httptest.ResponseRecorder) {
+	run("timeline is not affected by ShowOutdatedComments=false", func(t *testing.T, ctx *context.Context, resp *httptest.ResponseRecorder) {
 		ctx.Data["ShowOutdatedComments"] = false
 		renderConversation(ctx, preparedComment, "timeline")
-		assert.Contains(t, resp.Body.String(), `conversation-not-existing`)
+		assert.Contains(t, resp.Body.String(), `<div id="code-comments-`)
 	})
 }