diff --git a/nova/tests/unit/api/openstack/compute/test_limits.py b/nova/tests/unit/api/openstack/compute/test_limits.py
index 2526c955bf5b..8815b1ea6220 100644
--- a/nova/tests/unit/api/openstack/compute/test_limits.py
+++ b/nova/tests/unit/api/openstack/compute/test_limits.py
@@ -57,7 +57,7 @@ def fake_get_project_quotas(context, project_id, usages=True):
     }
 
     return {
-        k: {'limit': v, 'in_use': v // 2}
+        k: {'limit': v, 'in_use': max(-1, v // 2)}
         for k, v in absolute_limits.items()
     }