diff --git a/src/Server/Logger/ConnectionLogger.php b/src/Server/Logger/ConnectionLogger.php
index 74a6c22..6e06762 100644
--- a/src/Server/Logger/ConnectionLogger.php
+++ b/src/Server/Logger/ConnectionLogger.php
@@ -30,7 +30,9 @@ class ConnectionLogger extends Logger implements ConnectionInterface
 
     public function send($data)
     {
-        $this->info("Connection id {$this->connection->socketId} sending message {$data}");
+        $socketId = $this->connection->socketId ?? null;
+
+        $this->info("Connection id {$socketId} sending message {$data}");
 
         $this->connection->send($data);
     }
diff --git a/src/Server/Logger/WebsocketsLogger.php b/src/Server/Logger/WebsocketsLogger.php
index ec7aa9f..d4defc1 100644
--- a/src/Server/Logger/WebsocketsLogger.php
+++ b/src/Server/Logger/WebsocketsLogger.php
@@ -45,7 +45,9 @@ class WebsocketsLogger extends Logger implements MessageComponentInterface
 
     public function onClose(ConnectionInterface $connection)
     {
-        $this->warn("Connection id {$connection->socketId} closed.");
+        $socketId = $connection->socketId ?? null;
+
+        $this->warn("Connection id {$socketId} closed.");
 
         $this->app->onClose(ConnectionLogger::decorate($connection));
     }