diff --git a/neutron_lib/api/definitions/subnet_external_network.py b/neutron_lib/api/definitions/subnet_external_network.py
index a5bab8bad..8fa55a720 100644
--- a/neutron_lib/api/definitions/subnet_external_network.py
+++ b/neutron_lib/api/definitions/subnet_external_network.py
@@ -34,7 +34,7 @@ RESOURCE_ATTRIBUTE_MAP = {
             'allow_put': False,
             'default': False,
             'is_visible': True,
-            'is_filter': False,
+            'is_filter': True,
             'convert_to': converters.convert_to_boolean,
             'enforce_policy': True,
             'required_by_policy': True