diff --git a/test/case/ietf_interfaces/routing_basic.py b/test/case/ietf_interfaces/routing_basic.py
index 4305ebe4..1f42152f 100755
--- a/test/case/ietf_interfaces/routing_basic.py
+++ b/test/case/ietf_interfaces/routing_basic.py
@@ -1,8 +1,8 @@
 #!/usr/bin/env python3
 # ,------------------------------------------------,
 # |                 [TARGET]                       |
-# |                            br0                 |
-# |                           /   \                |
+# |                                                |
+# |                                                |
 # | target:mgmt   target:data0     targetgt:data1  |
 # |              [192.168.0.1]     [10.0.0.1]      |
 # '------------------------------------------------'