diff --git a/lib/xos-genx/xos-genx-tests/helpers.py b/lib/xos-genx/xos-genx-tests/helpers.py
index 232cae1..ca73402 100644
--- a/lib/xos-genx/xos-genx-tests/helpers.py
+++ b/lib/xos-genx/xos-genx-tests/helpers.py
@@ -23,6 +23,7 @@
 
 # Store in this class the args to pass at the generator
 class FakeArgs:
+    verbosity=0
     pass
 
 class XProtoTestHelpers: