diff --git a/categories.html b/categories.html
index d94a229c..8c7fea8d 100644
--- a/categories.html
+++ b/categories.html
@@ -19,7 +19,7 @@ <h2 id="{{ category[0] | replace:' ','-' }}" class="mdl-card__title-text">{{ cat
         {% for node in pages_list %}
           {% if node.title != null %}
             {% if group == null or group == node.group %}
-              <a class="mdl-button mdl-js-button mdl-js-ripple-effect" href="{{ node.url | replace_first: '/', '' | prepend: site.baseurl | prepend: site.url }}">
+              <a class="mdl-button mdl-js-button" href="{{ node.url | replace_first: '/', '' | prepend: site.baseurl | prepend: site.url }}">
                 <span class="button-header">
                   {{node.title}}
                 </span>