diff --git a/routers/web/repo/editor.go b/routers/web/repo/editor.go
index 58556deab2..ef9dcc3930 100644
--- a/routers/web/repo/editor.go
+++ b/routers/web/repo/editor.go
@@ -420,7 +420,7 @@ func DiffPreviewPost(ctx *context.Context) {
 	}
 
 	if diff.NumFiles == 0 {
-		ctx.PlainText(http.StatusOK, `<div class="tw-p-6">` + ctx.Locale.TrString("repo.editor.no_changes_to_show") + `</div>`)
+		ctx.PlainText(http.StatusOK, `<div class="tw-p-6">`+ctx.Locale.TrString("repo.editor.no_changes_to_show")+`</div>`)
 		return
 	}
 	ctx.Data["File"] = diff.Files[0]