diff --git a/Documentation/rest-api-changes.txt b/Documentation/rest-api-changes.txt
index 2b6796b..a8d8769 100644
--- a/Documentation/rest-api-changes.txt
+++ b/Documentation/rest-api-changes.txt
@@ -3228,6 +3228,8 @@
 * are visible to the calling user
 * are not already reviewer on the change
 * don't own the change
+* are not service users (unless
+  link:config.html#suggest.skipServiceUsers[skipServiceUsers] is set to `false`)
 
 Groups can be excluded from the results by specifying the 'exclude-groups'
 request parameter: