diff --git a/src/client/initMatrix.ts b/src/client/initMatrix.ts
index 5af0925a3..f14d9d8e2 100644
--- a/src/client/initMatrix.ts
+++ b/src/client/initMatrix.ts
@@ -48,6 +48,8 @@ export const initClient = async (session: Session): Promise<MatrixClient> => {
   await mx.initRustCrypto();
 
   mx.setMaxListeners(50);
+  // Each RoomNavItem subscribes to session_started/session_ended; one listener per visible room.
+  mx.matrixRTC.setMaxListeners(100);
 
   return mx;
 };