diff --git a/src/command/ConsoleCommandSender.php b/src/command/ConsoleCommandSender.php
index 5649f9f4c9..e94d8483e9 100644
--- a/src/command/ConsoleCommandSender.php
+++ b/src/command/ConsoleCommandSender.php
@@ -87,4 +87,9 @@ class ConsoleCommandSender implements CommandSender{
 		}
 		$this->lineHeight = $height;
 	}
+
+	public function __destruct(){
+		//permission subscriptions need to be cleaned up explicitly
+		$this->perm->destroyCycles();
+	}
 }