diff --git a/nikola/data/themes/base-jinja/templates/index.tmpl b/nikola/data/themes/base-jinja/templates/index.tmpl
index 203123685a..a36bac3477 100644
--- a/nikola/data/themes/base-jinja/templates/index.tmpl
+++ b/nikola/data/themes/base-jinja/templates/index.tmpl
@@ -20,7 +20,7 @@
         <div class="metadata">
             <p class="byline author vcard"><span class="byline-name fn">
             {% if author_pages_generated %}
-                <a href="{{ _link('author', post.author()) }}">{{ post.author() }}</a>
+                <a href="{{ _link('author', post.author()) }}">{{ post.author()|e }}</a>
             {% else %}
                 {{ post.author()|e }}
             {% endif %}
diff --git a/nikola/data/themes/base/templates/index.tmpl b/nikola/data/themes/base/templates/index.tmpl
index 0dc075df0e..294bdafb5c 100644
--- a/nikola/data/themes/base/templates/index.tmpl
+++ b/nikola/data/themes/base/templates/index.tmpl
@@ -20,7 +20,7 @@
         <div class="metadata">
             <p class="byline author vcard"><span class="byline-name fn">
             % if author_pages_generated:
-                <a href="${_link('author', post.author())}">${post.author()}</a>
+                <a href="${_link('author', post.author())}">${post.author()|h}</a>
             % else:
                 ${post.author()|h}
             % endif