diff --git a/src/services/PriceFeed/ws/PriceFeedSubscription.ts b/src/services/PriceFeed/ws/PriceFeedSubscription.ts
index 62c9369..7c6f00f 100644
--- a/src/services/PriceFeed/ws/PriceFeedSubscription.ts
+++ b/src/services/PriceFeed/ws/PriceFeedSubscription.ts
@@ -158,6 +158,5 @@ export default class PriceFeedSubscription<T extends SubscriptionType = Subscrip
   kill() {
     this.isClosedIntentionally = true;
     this.ws?.close();
-    clearInterval(this.heartbeatInterval);
   }
 }