diff --git a/tests/pricehist/test_fetch.py b/tests/pricehist/test_fetch.py
index 89759f6..61af29b 100644
--- a/tests/pricehist/test_fetch.py
+++ b/tests/pricehist/test_fetch.py
@@ -36,7 +36,7 @@ def output(mocker):
 
 
 @pytest.fixture
-def fmt(mocker):
+def fmt():
     return Format()