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-rw-r--r--toolkit/components/extensions/parent/ext-idle.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/toolkit/components/extensions/parent/ext-idle.js b/toolkit/components/extensions/parent/ext-idle.js
index f68ea293d7..a0f9dcfff4 100644
--- a/toolkit/components/extensions/parent/ext-idle.js
+++ b/toolkit/components/extensions/parent/ext-idle.js
@@ -29,7 +29,7 @@ const getIdleObserver = extension => {
if (!observer) {
observer = new (class extends ExtensionCommon.EventEmitter {
- observe(subject, topic, data) {
+ observe(subject, topic) {
if (topic == "idle" || topic == "active") {
this.emit("stateChanged", topic);
}