diff --git a/appveyor.yml b/appveyor.yml
index 3074e933..85d139a8 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -22,7 +22,7 @@ build_script:
 
     netsh advfirewall set allprofiles state off
 
-    start /B python -m trace --trace ..\test\mqttsas2.py mqtt.iotree.co.uk
+    start /B python ..\test\mqttsas2.py mqtt.iotree.co.uk
 
     ctest -T test -VV