diff --git a/_includes/_footer.html b/_includes/_footer.html
index 76bf356f..b9f48bd0 100644
--- a/_includes/_footer.html
+++ b/_includes/_footer.html
@@ -5,7 +5,7 @@
   <ins class="adsbygoogle"
        style="display:inline-block;width:320px;height:50px"
        data-ad-client="{{ site.owner.google.ad-client }}"
-       data-ad-slot="{{ site.owner.google.slot }}"></ins>
+       data-ad-slot="{{ site.owner.google.ad-slot }}"></ins>
   <script>
   (adsbygoogle = window.adsbygoogle || []).push({});
   </script>