diff --git a/docs/simplesamlphp-upgrade-notes-1.7.txt b/docs/simplesamlphp-upgrade-notes-1.7.txt
index 0f6fcdea7c8caf0d1e0110b7363fa9605731e62d..3bdfb3c862628637b5e9ea22c1e42c5d3fc7f064 100644
--- a/docs/simplesamlphp-upgrade-notes-1.7.txt
+++ b/docs/simplesamlphp-upgrade-notes-1.7.txt
@@ -7,3 +7,6 @@ Upgrade notes for simpleSAMLphp 1.7
   * There have been several changes to the internal API.
     Most of the changes will not be noticed by the application using simpleSAMLphp.
     See the changelog for more details about the changes.
+  * Relative redirects are no longer supported.
+    If your application passes relative URL's to the `SimpleSAML_Utilities::redirect()`-function, it will no longer work.
+    This also applies if you pass relative URL's to other functions that do redirects.