diff --git a/src/matrix/calls/TurnServerSource.ts b/src/matrix/calls/TurnServerSource.ts
index ca0f6848..1066f7a6 100644
--- a/src/matrix/calls/TurnServerSource.ts
+++ b/src/matrix/calls/TurnServerSource.ts
@@ -120,7 +120,7 @@ export class TurnServerSource {
         }
     }
 
-    stopPollLoop() {
+    private stopPollLoop() {
         this.isPolling = false;
         this.currentObservable = undefined;
         this.pollTimeout?.dispose();