diff --git a/authz/client/src/main/java/org/keycloak/authorization/client/resource/AuthorizationResource.java b/authz/client/src/main/java/org/keycloak/authorization/client/resource/AuthorizationResource.java
index 3bf90f3745..0a2887f0bb 100644
--- a/authz/client/src/main/java/org/keycloak/authorization/client/resource/AuthorizationResource.java
+++ b/authz/client/src/main/java/org/keycloak/authorization/client/resource/AuthorizationResource.java
@@ -86,6 +86,7 @@ public class AuthorizationResource {
 
         if (request.getMetadata() == null) {
             metadata = new AuthorizationRequest.Metadata();
+            request.setMetadata(metadata);
         } else {
             metadata = request.getMetadata();
         }