2 files changed, 2 insertions, 2 deletions
diff --git a/toolkit/components/telemetry/pings/EventPing.sys.mjs b/toolkit/components/telemetry/pings/EventPing.sys.mjs
index 36e8489e37..c3ece746f3 100644
--- a/toolkit/components/telemetry/pings/EventPing.sys.mjs
+++ b/toolkit/components/telemetry/pings/EventPing.sys.mjs
@@ -103,7 +103,7 @@ export var TelemetryEventPing = {
     this._clearTimer();
   },
 
-  observe(aSubject, aTopic, aData) {
+  observe(aSubject, aTopic) {
     switch (aTopic) {
       case EVENT_LIMIT_REACHED_TOPIC:
         this._log.trace("event limit reached");
diff --git a/toolkit/components/telemetry/pings/TelemetrySession.sys.mjs b/toolkit/components/telemetry/pings/TelemetrySession.sys.mjs
index f564cd41dd..c7332c2a36 100644
--- a/toolkit/components/telemetry/pings/TelemetrySession.sys.mjs
+++ b/toolkit/components/telemetry/pings/TelemetrySession.sys.mjs
@@ -1122,7 +1122,7 @@ var Impl = {
   /**
    * This observer drives telemetry.
    */
-  observe(aSubject, aTopic, aData) {
+  observe(aSubject, aTopic) {
     this._log.trace("observe - " + aTopic + " notified.");
 
     switch (aTopic) {