diff --git a/setup.py b/setup.py
index 6dc8131..85c38b0 100755
--- a/setup.py
+++ b/setup.py
@@ -32,19 +32,22 @@ from setuptools import setup
 
 HTTPretty.disable()
 
+HTTPRETTY_PATH = os.path.abspath(os.path.join(__file__, os.pardir))
+
 
 def get_packages():
     # setuptools can't do the job :(
     packages = []
-    for root, dirnames, filenames in os.walk('httpretty'):
+    for root, dirnames, filenames in os.walk(os.path.join(HTTPRETTY_PATH, 'httpretty')):
+        path = root.replace(HTTPRETTY_PATH, '').strip('/')
         if '__init__.py' in filenames:
-            packages.append(".".join(os.path.split(root)).strip("."))
+            packages.append(".".join(os.path.split(path)).strip("."))
 
     return packages
 
 
 def test_packages():
-    test_reqs = os.path.join(os.getcwd(), 'requirements.pip')
+    test_reqs = os.path.join(HTTPRETTY_PATH, 'requirements.pip')
     tests_require = [
             line.strip() for line in open(test_reqs).readlines()
             if not line.startswith("#")