diff --git a/lib/identity-search/identity-search-context.js b/lib/identity-search/identity-search-context.js
--- a/lib/identity-search/identity-search-context.js
+++ b/lib/identity-search/identity-search-context.js
@@ -203,7 +203,7 @@
         const heartbeat: Heartbeat = {
           type: identitySearchMessageToServerTypes.HEARTBEAT,
         };
-        socket.current?.send(JSON.stringify(heartbeat));
+        identitySearchSocket.send(JSON.stringify(heartbeat));
       }
     };