diff --git a/vmware_nsxlib/v3/security.py b/vmware_nsxlib/v3/security.py
index 8d4ca026..7df029d1 100644
--- a/vmware_nsxlib/v3/security.py
+++ b/vmware_nsxlib/v3/security.py
@@ -218,7 +218,7 @@ class NsxLibNsGroup(utils.NsxLibApiBase):
             # REVISIT(roeyc): A ManagerError might have been raised for a
             # different reason, e.g - NSGroup does not exists.
             LOG.warning(_LW("Failed to add %(target_type)s resources "
-                            "(%(target_ids))s to NSGroup %(nsgroup_id)s"),
+                            "(%(target_ids)s) to NSGroup %(nsgroup_id)s"),
                         {'target_type': target_type,
                          'target_ids': target_ids,
                          'nsgroup_id': nsgroup_id})