diff --git a/config/global.ini.php b/config/global.ini.php
index 1dc2dda8252b797b54349db983df4f0ae1ebe8a6..d12f73c1c0d6a66c60a492ed21e34fc4e0382299 100644
--- a/config/global.ini.php
+++ b/config/global.ini.php
@@ -539,8 +539,9 @@ enable_load_data_infile = 1
 ; - links to Uninstall themes will be disabled (but user can still enable/disable themes)
 enable_plugins_admin = 1
 
-; By setting this option to 1, it will be possible to upload plugin archives directly in Piwik
-; Enabling this opens a remote code execution vulnarability, which yould be used by attackers gaining access to Piwik admin
+; By setting this option to 1, it will be possible for Super Users to upload Piwik plugin ZIP archives directly in Piwik Administration.
+; Enabling this opens a remote code execution vulnerability where
+; an attacker who gained Super User access could execute custom PHP code in a Piwik plugin.
 enable_plugin_upload = 0
 
 ; By setting this option to 0, you can prevent Super User from editing the Geolocation settings.
diff --git a/core/CronArchive.php b/core/CronArchive.php
index cc8a1de71c85a459f103d7ab90930ccc81977b22..d9ed8c6311d4477d737a4c10ea768bfafb396f6b 100644
--- a/core/CronArchive.php
+++ b/core/CronArchive.php
@@ -1017,7 +1017,7 @@ class CronArchive
     private function checkResponse($response, $url)
     {
         if (empty($response)
-            || stripos($response, 'error')
+            || stripos($response, 'error') !== false
         ) {
             return $this->logNetworkError($url, $response);
         }