diff --git a/umap/static/umap/js/modules/slideshow.js b/umap/static/umap/js/modules/slideshow.js
index 51b4a523..b6708f2c 100644
--- a/umap/static/umap/js/modules/slideshow.js
+++ b/umap/static/umap/js/modules/slideshow.js
@@ -18,13 +18,7 @@ export default class Slideshow extends WithTemplate {
     this.map = map
     this._id = null
     this.CLASSNAME = 'umap-slideshow-active'
-    this.options = Object.assign(
-      {
-        delay: 5000,
-        autoplay: false,
-      },
-      options
-    )
+    this.setOptions(options)
     this._current = null
 
     if (this.options.autoplay) {
@@ -60,6 +54,16 @@ export default class Slideshow extends WithTemplate {
     return this.current.getNext()
   }
 
+  setOptions(options) {
+    this.options = Object.assign(
+      {
+        delay: 5000,
+        autoplay: false,
+      },
+      options
+    )
+  }
+
   defaultDatalayer() {
     return this.map.findDataLayer((d) => d.canBrowse())
   }
diff --git a/umap/static/umap/js/umap.js b/umap/static/umap/js/umap.js
index e64789ca..99afe89b 100644
--- a/umap/static/umap/js/umap.js
+++ b/umap/static/umap/js/umap.js
@@ -1469,12 +1469,8 @@ U.Map = L.Map.extend({
         { handler: 'Switch', label: L._('Autostart when map is loaded') },
       ],
     ]
-    const slideshowHandler = function () {
-      this.slideshow.setOptions(this.options.slideshow)
-    }
     const slideshowBuilder = new U.FormBuilder(this, slideshowFields, {
-      callback: slideshowHandler,
-      callbackContext: this,
+      callback: () => this.slideshow.setOptions(this.options.slideshow),
     })
     slideshow.appendChild(slideshowBuilder.build())
   },