diff --git a/tests/hwsim/test_wpas_mesh.py b/tests/hwsim/test_wpas_mesh.py
index 3c918184f..8298d482d 100644
--- a/tests/hwsim/test_wpas_mesh.py
+++ b/tests/hwsim/test_wpas_mesh.py
@@ -406,7 +406,7 @@ def set_reg(dev, country):
 def clear_reg_setting(dev):
     dev[0].request("MESH_GROUP_REMOVE " + dev[0].ifname)
     dev[1].request("MESH_GROUP_REMOVE " + dev[1].ifname)
-    subprocess.call(['iw', 'reg', 'set', '00'])
+    clear_regdom_dev(dev)
     dev[0].flush_scan_cache()
     dev[1].flush_scan_cache()