diff --git a/src/Client.php b/src/Client.php
index 836f0cf..f995a92 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -116,7 +116,7 @@ public function connect(): void
             go(fn () => $this->startConnection());
             go(fn () => Timer::tick(5000, function (int $timerId) {
                 $this->pingTimer = $timerId;
-                if ($this->client->isConnected()) {
+                if ($this->getClient() && $this->getClient()->isConnected()) {
                     $this->getClient()->ping();
                 }
             }));