diff --git a/tests/test_dataprep.py b/tests/test_dataprep.py
index 94f0c74..f31f46f 100644
--- a/tests/test_dataprep.py
+++ b/tests/test_dataprep.py
@@ -172,7 +172,10 @@ def test_init_multiple_rows(self):
         }
 
         self.assertRaises(
-            ValueError, Dataprep, foo=pd.concat([self.foo, self.foo.iloc[0:1]], axis=0), **kwargs
+            ValueError,
+            Dataprep,
+            foo=pd.concat([self.foo, self.foo.iloc[0:1]], axis=0),
+            **kwargs,
         )
 
     def test_init_arg_treatment_identifier(self):