diff --git a/public/typo3conf/ext/ep_theme/Resources/Private/Assets/js/controllers/lightbox_controller.js b/public/typo3conf/ext/ep_theme/Resources/Private/Assets/js/controllers/lightbox_controller.js
index e228b8ad..1601f634 100644
--- a/public/typo3conf/ext/ep_theme/Resources/Private/Assets/js/controllers/lightbox_controller.js
+++ b/public/typo3conf/ext/ep_theme/Resources/Private/Assets/js/controllers/lightbox_controller.js
@@ -17,8 +17,12 @@ export default class extends Controller {
             elements.push(element)
         } else {
             this.thumbTargets.forEach(thumb => {
-                let caption = element.hasAttribute('data-lightbox-caption') ? element.dataset.lightboxCaption : null
-                elements.push({ href: thumb.href, title: caption })
+                let element = { href: thumb.href }
+                let caption = this.element.hasAttribute('data-lightbox-caption') ? this.element.dataset.lightboxCaption : null
+                if (null !== caption) {
+                    element.title = caption
+                }
+                elements.push(element)
             })
         }
         this.lightbox = Glightbox({