diff --git a/doc/docbook/GuideReferenceStandards.xml b/doc/docbook/GuideReferenceStandards.xml
index a1caa695..528fac93 100644
--- a/doc/docbook/GuideReferenceStandards.xml
+++ b/doc/docbook/GuideReferenceStandards.xml
@@ -23,6 +23,6 @@
   </para>
   <para>
     Thumbnails:
-    <ulink url="https://specifications.freedesktop.org/thumbnail-spec/thumbnail-spec-latest.html" />
+    <ulink url="https://www.freedesktop.org/wiki/Specifications/thumbnails/" />
   </para>
 </section>