diff --git a/test/python_magic_test.py b/test/python_magic_test.py
index ff6b597..5af89bb 100755
--- a/test/python_magic_test.py
+++ b/test/python_magic_test.py
@@ -184,7 +184,7 @@ def test_all_cases(self):
         shutil.copyfile(os.path.join(MagicTest.TESTDATA_DIR, "lambda"), dest)
         os.environ["TZ"] = "UTC"
         try:
-            for file_name, cases in CASES:
+            for file_name, cases in CASES.items():
                 filename = os.path.join(self.TESTDATA_DIR, file_name)
                 for flags, outputs in cases:
                     m = magic.Magic(**flags)