diff --git a/src/API/PlayerAPI.php b/src/API/PlayerAPI.php
index f8759f460..22aa49f11 100644
--- a/src/API/PlayerAPI.php
+++ b/src/API/PlayerAPI.php
@@ -277,14 +277,14 @@ class PlayerAPI{
 				}
 				break;
 			case "list":
-				$output .= "There are ".count($this->server->clients)."/".$this->server->maxClients." players online:\n";
+				$cmd_output .= "There are ".count($this->server->clients)."/".$this->server->maxClients." players online:\n";
 				if(count($this->server->clients) == 0){
 					break;
 				}
 				foreach($this->server->clients as $c){
-					$output .= $c->username.", ";
+					$cmd_output .= $c->username.", ";
 				}
-				$output = substr($output, 0, -2)."\n";
+				$output = substr($cmd_output, 0, -2)."\n";
 				break;
 		}
 		return $output;