diff --git a/configs/topologies/CustomMesh.py b/configs/topologies/CustomMesh.py
index 545ba4b326..088e4b9cfe 100644
--- a/configs/topologies/CustomMesh.py
+++ b/configs/topologies/CustomMesh.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2021 ARM Limited
+# Copyright (c) 2021,2022 ARM Limited
 # All rights reserved.
 #
 # The license below extends only to copyright in the software and shall
@@ -372,6 +372,10 @@ class CustomMesh(SimpleTopology):
         # Set up
         network.int_links = self._int_links
         network.ext_links = self._ext_links
+        # fix Routers being set as link child
+        for r in self._routers:
+            if r.has_parent():
+                r.get_parent().clear_child(r.get_name())
         network.routers = self._routers
 
         pairing = getattr(options, "pairing", None)