diff --git a/toolkit/components/extensions/parent/ext-notifications.js b/toolkit/components/extensions/parent/ext-notifications.js
index 740d28ddfc73..fe44e5745200 100644
--- a/toolkit/components/extensions/parent/ext-notifications.js
+++ b/toolkit/components/extensions/parent/ext-notifications.js
@@ -154,7 +154,7 @@ this.notifications = class extends ExtensionAPI {
           name: "notifications.onClicked",
           register: fire => {
             let listener = (event, notificationId) => {
-              fire.async(notificationId, true);
+              fire.async(notificationId);
             };
 
             notificationsMap.on("clicked", listener);
@@ -169,7 +169,7 @@ this.notifications = class extends ExtensionAPI {
           name: "notifications.onShown",
           register: fire => {
             let listener = (event, notificationId) => {
-              fire.async(notificationId, true);
+              fire.async(notificationId);
             };
 
             notificationsMap.on("shown", listener);