diff --git a/app/code/core/Mage/Core/Helper/EnvironmentConfigLoader.php b/app/code/core/Mage/Core/Helper/EnvironmentConfigLoader.php
index 61abc39e84e..c7acb46678e 100644
--- a/app/code/core/Mage/Core/Helper/EnvironmentConfigLoader.php
+++ b/app/code/core/Mage/Core/Helper/EnvironmentConfigLoader.php
@@ -68,14 +68,14 @@ public function overrideEnvironment(Varien_Simplexml_Config $xmlConfig)
 
             switch ($scope) {
                 case static::CONFIG_KEY_DEFAULT:
-                    list($_, $_, $section, $group, $field) = $configKeyParts;
+                    list($unused1, $unused2, $section, $group, $field) = $configKeyParts;
                     $path = $this->buildPath($section, $group, $field);
                     $xmlConfig->setNode($this->buildNodePath($scope, $path), $value);
                     break;
 
                 case static::CONFIG_KEY_WEBSITES:
                 case static::CONFIG_KEY_STORES:
-                    list($_, $_, $code, $section, $group, $field) = $configKeyParts;
+                    list($unused1, $unused2, $code, $section, $group, $field) = $configKeyParts;
                     $path = $this->buildPath($section, $group, $field);
                     $nodePath = sprintf('%s/%s/%s', strtolower($scope), strtolower($code), $path);
                     $xmlConfig->setNode($nodePath, $value);