diff --git a/setup.py b/setup.py
index 73f7e6a..c14779a 100644
--- a/setup.py
+++ b/setup.py
@@ -16,6 +16,7 @@
 ##
 ###############################################################################
 
+import os
 import re
 from setuptools import setup, find_packages
 
@@ -31,7 +32,7 @@ Authors:
   - Tobias Oberstein (maintainer)
 """
 
-VERSIONFILE = "scour/__init__.py"
+VERSIONFILE = os.path.join(os.path.dirname(os.path.realpath(__file__)), "scour", "__init__.py")
 verstrline = open(VERSIONFILE, "rt").read()
 VSRE = r"^__version__ = u['\"]([^'\"]*)['\"]"
 mo = re.search(VSRE, verstrline, re.M)