diff --git a/Installation/changes.html b/Installation/changes.html
index 18d31d7035c..48b2017c44a 100644
--- a/Installation/changes.html
+++ b/Installation/changes.html
@@ -166,7 +166,11 @@ and <code>src/</code> directories).
     <li>Optional template functor <code>Filter</code> is replaced by
     another optional template functor <code>Priority</code>. This
     allows to change the way facets are prioritized by the algorithm
-      instead of having a simple option to reject some facets.</li>
+    instead of having a simple option to reject some
+    facets. <b>Breaking change</b>: Programs using the
+    old <code>Filter</code> API will not compile anymore as it must be
+    replaced with the <code>Priority</code> API as described in the
+    manual. Codes using the default behavior are not impacted.</li>
   </ul>
 <!-- Geometry Processing -->
   <h3>Polygon Mesh Processing</h3>