diff --git a/setup.py b/setup.py
index 92a33e5..7027b67 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@ class PyTest(TestCommand):
     def run_tests(self):
         import sys
         import pytest
-        sys.exit(pytest.main(['tests']))
+        sys.exit(pytest.main(['.']))
 
 setup(
     name='amodem',