diff --git a/configure.phtml b/configure.phtml
index 87eac9b..d645d43 100644
--- a/configure.phtml
+++ b/configure.phtml
@@ -1,13 +1,13 @@
 <?php
-  $api_key = FreshRSS_Context::$user_conf->kagi_api_key;
+  $kagi_api_key = FreshRSS_Context::$user_conf->kagi_api_key;
 ?>
 
 <form action="<?php echo _url('extension', 'configure', 'e', urlencode($this->getName())); ?>" method="post">
   <input type="hidden" name="_csrf" value="<?php echo FreshRSS_Auth::csrfToken(); ?>" />
   <div class="form-group">
-    <label class="group-name" for="api_key"><?php echo _t('ext.kagiSummarizer.configure.api_key'); ?></label>
+    <label class="group-name" for="kagi_api_key"><?php echo _t('ext.kagiSummarizer.configure.kagi_api_key'); ?></label>
     <div class="group-controls">
-      <input type="text" name="api_key" id="api_key" value="<?php echo $api_key; ?>">
+      <input type="text" name="kagi_api_key" id="kagi_api_key" value="<?php echo $kagi_api_key; ?>">
     </div>
   </div>
   <div class="form-group form-actions">
diff --git a/extension.php b/extension.php
index 4a0e686..50defc8 100644
--- a/extension.php
+++ b/extension.php
@@ -16,8 +16,7 @@ class KagiSummarizerExtension extends Minz_Extension {
     $this->registerTranslates();
 
     if (Minz_Request::isPost()) {
-      $api_key = Minz_Request::param('api_key', '');
-      FreshRSS_Context::$user_conf->kagi_api_key = $api_key;
+      FreshRSS_Context::$user_conf->kagi_api_key = Minz_Request::param('kagi_api_key', '');
       FreshRSS_Context::$user_conf->save();
     }
   }
diff --git a/i18n/en/ext.php b/i18n/en/ext.php
index 7b0fea6..091c06b 100644
--- a/i18n/en/ext.php
+++ b/i18n/en/ext.php
@@ -3,7 +3,7 @@
 return array(
   'kagiSummarizer' => array(
     'configure' => array(
-      'api_key' => 'Kagi API Key'
+      'kagi_api_key' => 'Kagi API Key'
     )
   )
 );