diff --git a/src/User_Session_Command.php b/src/User_Session_Command.php
index e4efd59c..d5b9e195 100644
--- a/src/User_Session_Command.php
+++ b/src/User_Session_Command.php
@@ -30,6 +30,8 @@ class User_Session_Command extends WP_CLI_Command {
 		'ua',
 	];
 
+	private $fetcher;
+
 	public function __construct() {
 		$this->fetcher = new UserFetcher();
 	}