diff --git a/setup.py b/setup.py
index 073c136..30caa63 100755
--- a/setup.py
+++ b/setup.py
@@ -79,5 +79,6 @@ def get_data_files(self):
       package_dir = {'async':''},
       ext_modules=[Extension('async.mod.zlib', ['mod/zlibmodule.c'])],
       license = "BSD License",
+      zip_safe=False,
       long_description = """Async is a framework to process interdependent tasks in a pool of workers"""
       )