diff --git a/src/stores/widgets/StopGapWidgetDriver.ts b/src/stores/widgets/StopGapWidgetDriver.ts
index 6c87cb4337..c2453ebccf 100644
--- a/src/stores/widgets/StopGapWidgetDriver.ts
+++ b/src/stores/widgets/StopGapWidgetDriver.ts
@@ -150,7 +150,7 @@ export class StopGapWidgetDriver extends WidgetDriver {
                 WidgetEventCapability.forStateEvent(EventDirection.Receive, "org.matrix.msc3401.call.member").raw,
             );
 
-            const sendRecvRoomEvents = ["io.element.call.encryption_key"];
+            const sendRecvRoomEvents = ["io.element.call.encryption_keys"];
             for (const eventType of sendRecvRoomEvents) {
                 this.allowedCapabilities.add(WidgetEventCapability.forRoomEvent(EventDirection.Send, eventType).raw);
                 this.allowedCapabilities.add(WidgetEventCapability.forRoomEvent(EventDirection.Receive, eventType).raw);