diff --git a/app/ESI.php b/app/ESI.php
index 078d1af..23864ce 100644
--- a/app/ESI.php
+++ b/app/ESI.php
@@ -398,7 +398,7 @@ public function getUniverseSystemData(int $systemId) : array {
         $systemData = [];
         $response = $this->request($url, 'GET');
 
-        if( !empty($response) ){
+        if( !$response->error && !empty($response) ){
             $systemData = (new namespace\Mapper\System($response))->getData();
         }