diff --git a/test/extended/networking/network_segmentation.go b/test/extended/networking/network_segmentation.go
index 91a332516e63..d650e7706898 100644
--- a/test/extended/networking/network_segmentation.go
+++ b/test/extended/networking/network_segmentation.go
@@ -1466,7 +1466,6 @@ func generateNAD(config networkAttachmentConfig) *nadapi.NetworkAttachmentDefini
         "topology":%q,
         "subnets": %q,
         "excludeSubnets": %q,
-        "mtu": 1300,
         "netAttachDefName": %q,
         "vlanID": %d,
         "allowPersistentIPs": %t,