diff --git a/scripts/vm/network/security_group.py b/scripts/vm/network/security_group.py
index 704b2798202..8a946bc5b7b 100755
--- a/scripts/vm/network/security_group.py
+++ b/scripts/vm/network/security_group.py
@@ -538,7 +538,7 @@ def post_default_network_rules(vm_name, vm_id, vm_ip, vm_mac, vif, brname, dhcpS
             logging.debug("Failed to log default network rules, ignoring")
 def delete_rules_for_vm_in_bridge_firewall_chain(vmName):
     vm_name = vmName
-    if vm_name.startswith('i-') or vm_name.startswith('r-'):
+    if vm_name.startswith('i-'):
 	vm_name = '-'.join(vm_name.split('-')[:-1]) + "-def"
 
     vmchain = vm_name