diff --git a/web/src/prefs-dialog.js b/web/src/prefs-dialog.js
index 0783e6c33..172fd53ea 100644
--- a/web/src/prefs-dialog.js
+++ b/web/src/prefs-dialog.js
@@ -170,6 +170,8 @@ export class PrefsDialog extends EventTarget {
               break;
           }
         }
+
+        element.dispatchEvent(new Event('session-change'));
       }
     }
   }
@@ -203,7 +205,7 @@ export class PrefsDialog extends EventTarget {
         element.classList.toggle('disabled', !check.checked);
       }
     };
-    check.addEventListener('change', callback);
+    check.addEventListener('session-change', callback);
     callback();
   }