diff --git a/src/lightgallery.ts b/src/lightgallery.ts
index a69120a48..955a72565 100644
--- a/src/lightgallery.ts
+++ b/src/lightgallery.ts
@@ -2315,7 +2315,7 @@ export class LightGallery {
      *  plugin.refresh();
      *
      */
-    refresh(galleryItems: GalleryItem[]): void {
+    refresh(galleryItems?: GalleryItem[]): void {
         if (!this.settings.dynamic) {
             this.invalidateItems();
         }