diff --git a/tests.py b/tests.py
index 9635eff..fb2540c 100644
--- a/tests.py
+++ b/tests.py
@@ -11,7 +11,7 @@ def setUp(self):
         self.pre_mname = "PRE_MACRO_TEST"
 
     def test_req_chth_macro(self):
-        self.chth_prep = CheetahPrep(self.pname, self.argname, "required", True, self.mname)
+        self.chth_prep = CheetahPrep(self.pname, self.argname, "required", True, mname=self.mname)
         self.exp_chth = "#include source=$MACRO_TEST#"
         self.assertEqual(self.chth_prep.chth, self.exp_chth)