diff --git a/_content/retro.html b/_content/retro.html
index 5ddd64d..85ca1ee 100644
--- a/_content/retro.html
+++ b/_content/retro.html
@@ -37,7 +37,7 @@ layout: none
             <A HREF="/">Old site</A>
           </TD>
         </TR>
-        {%- assign main_pages = site.html_pages | where: "less_important", null -%}
+        {%- assign main_pages = site.content | where: "less_important", null -%}
         {%- for html_page in main_pages -%}
           {%- unless html_page.url == '/' -%}
             <TR>