diff --git a/lib/ansible/modules/cloud/openstack/os_group_facts.py b/lib/ansible/modules/cloud/openstack/os_group_facts.py
index 730a2bb3fbe..e80cc325093 100644
--- a/lib/ansible/modules/cloud/openstack/os_group_facts.py
+++ b/lib/ansible/modules/cloud/openstack/os_group_facts.py
@@ -28,6 +28,7 @@ options:
      description:
         - Name or ID of the group
      required: true
+     type: str
    domain:
      description:
         - Name or ID of the domain containing the group if the cloud supports domains