diff --git a/modules/fb_instant_articles_display/src/DrupalInstantArticleDisplay.php b/modules/fb_instant_articles_display/src/DrupalInstantArticleDisplay.php
index 8e869f5..5596d95 100644
--- a/modules/fb_instant_articles_display/src/DrupalInstantArticleDisplay.php
+++ b/modules/fb_instant_articles_display/src/DrupalInstantArticleDisplay.php
@@ -603,7 +603,7 @@ public function addAdsFromSettings() {
           $ad->withSource(
             url('https://www.facebook.com/adnw_request', array(
               'query' => array(
-                'placement' => $ad_placement_id,
+                'placement' => $an_placement_id,
                 'adtype' => 'banner' . $width . 'x' . $height,
               ),
             ))