diff --git a/eoapublications/templates/publications/chapter/chapter_base.html b/eoapublications/templates/publications/chapter/chapter_base.html
index fec6f14..d712c6c 100644
--- a/eoapublications/templates/publications/chapter/chapter_base.html
+++ b/eoapublications/templates/publications/chapter/chapter_base.html
@@ -130,7 +130,7 @@ <h1 class="publication-detail__title">
             {%  if Element.Kind != 'eoafootnote' %}
             <div class="row" id="{{ Element.Order }}">
               <div class="flags">
-                <button class="icon-bookmark publications-popup" data-content="If you want to directly link to this paragraph in the text, you can use the following URL:&lt;br/&gt; &lt;a href='http://{{ request.site }}/{{ Element.Publication.Serie }}/{{ Element.Publication.Number }}/{{ Element.Chapter.Order }}/index.html#{{ Element.Order }}'&gt;http://{{ request.site }}/{{ Element.Publication.Serie }}/{{ Element.Publication.Number }}/{{ Element.Chapter.Order }}/index.html#{{ Element.Order }}&lt;/a&gt; " title="" rel="popover" data-title="Permanent Link"></button>
+                <button class="icon-bookmark publications-popup" data-content="If you want to directly link to this paragraph in the text, you can use the following URL:&lt;br/&gt; &lt;a href='https://{{ request.site }}/{{ Element.Publication.Serie }}/{{ Element.Publication.Number }}/{{ Element.Chapter.Order }}/index.html#{{ Element.Order }}'&gt;https://{{ request.site }}/{{ Element.Publication.Serie }}/{{ Element.Publication.Number }}/{{ Element.Chapter.Order }}/index.html#{{ Element.Order }}&lt;/a&gt; " title="" rel="popover" data-title="Permanent Link"></button>
                 {% if Element.Indexelements %}
                 <button class="icon-bookmark publications-popup-eye" data-content="{% for Indexelement in Element.Indexelements%} {{ Indexelement.Html }} {% endfor %}" title="" rel="popover" data-title="Keywords, Persons and Locations"></button>
                 {% endif %}