Index: setup.py
--- setup.py.orig
+++ setup.py
@@ -27,7 +27,7 @@ from setuptools.command.test import test as TestComman
 class PyTest(TestCommand):
     def finalize_options(self):
         TestCommand.finalize_options(self)
-        self.test_args = ['-x', 'build/lib/pygal']
+        self.test_args = ['-x', 'lib/pygal']
         self.test_suite = True
 
     def run_tests(self):