diff --git a/plugins/modules/os_user_role.py b/plugins/modules/os_user_role.py
index 632c5424..f848a83d 100644
--- a/plugins/modules/os_user_role.py
+++ b/plugins/modules/os_user_role.py
@@ -133,6 +133,7 @@ def main():
     sdk, cloud = openstack_cloud_from_module(module)
     try:
         filters = {}
+        domain_id = None
 
         r = cloud.get_role(role)
         if r is None:
@@ -144,6 +145,7 @@ def main():
             if d is None:
                 module.fail_json(msg="Domain %s is not valid" % domain)
             filters['domain'] = d['id']
+            domain_id = d['id']
         if user:
             if domain:
                 u = cloud.get_user(user, domain_id=filters['domain'])
@@ -158,7 +160,6 @@ def main():
             if g is None:
                 module.fail_json(msg="Group %s is not valid" % group)
             filters['group'] = g['id']
-        domain_id = None
         if project:
             if domain:
                 p = cloud.get_project(project, domain_id=filters['domain'])