diff --git a/tests/unit/test_tango-commands.py b/tests/unit/test_tango-commands.py
index e6fa5a6a78f942cab9ee0154fcfdce6aea2829aa..66b052a80cc528a39ed916cdc65b83fac553f62a 100644
--- a/tests/unit/test_tango-commands.py
+++ b/tests/unit/test_tango-commands.py
@@ -10,6 +10,7 @@ from pytest_bdd import given, scenario, then, when, parsers, scenarios
 
 scenarios('../features/tango-commands.feature')
 
+@pytest.fixture
 @given(parsers.parse('a device called {device_name}'))
 def device_proxy(run_context, device_name):
     """a device called sys/tg_test/1."""