diff --git a/metatag.inc b/metatag.inc
index 529c1ba..49d934b 100644
--- a/metatag.inc
+++ b/metatag.inc
@@ -270,3 +270,34 @@ class DrupalDateIntervalMetaTag extends DrupalDefaultMetaTag {
     return $value;
   }
 }
+
+/**
+ * Http equiv type meta tag controller.
+ */
+class DrupalHttpEquivMetaTag extends DrupalTextMetaTag {
+  public function getElement(array $options = array()) {
+    $element = isset($this->info['element']) ? $this->info['element'] : array();
+
+    $value = $this->getValue($options);
+    if (strlen($value) === 0) {
+      return array();
+    }
+
+    $element += array(
+      '#theme' => 'metatag_http_equiv',
+      '#tag' => 'meta',
+      '#id' => 'metatag_' . $this->info['name'],
+      '#name' => $this->info['name'],
+      '#value' => $value,
+    );
+
+    // Add header information if desired.
+    if (!empty($this->info['header'])) {
+      $element['#attached']['drupal_add_http_header'][] = array($this->info['header'], $value);
+    }
+
+    return array(
+      '#attached' => array('drupal_add_html_head' => array(array($element, $element['#id']))),
+    );
+  }
+}
diff --git a/metatag.metatag.inc b/metatag.metatag.inc
index 253ded9..6b66f47 100644
--- a/metatag.metatag.inc
+++ b/metatag.metatag.inc
@@ -164,7 +164,7 @@ function metatag_metatag_info() {
     'class' => 'DrupalTextMetaTag',
     'group' => 'advanced',
   );
-  
+
   $info['tags']['standout'] = array(
     'label' => t('Google Standout'),
     'description' => t("Highlight standout journalism on the web, especially for breaking news; used as an indicator in <a href=\"@google_news\">Google News</a>. Warning: Don't abuse it, to be used a maximum of 7 times per calendar week!", array('@google_news' => 'https://support.google.com/news/publisher/answer/191283?hl=en&ref_topic=2484650')),
@@ -238,5 +238,12 @@ function metatag_metatag_info() {
      'group' => 'advanced',
    );
 
+  $info['tags']['content-language'] = array(
+    'label' => t('Content language'),
+    'description' => '',
+    'class' => 'DrupalHttpEquivMetaTag',
+    'group' => 'advanced',
+  );
+
   return $info;
 }