diff --git a/setup.py b/setup.py
index da8dc8d..57ac6b3 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 # {# pkglts, pysetup.kwds
 # format setup arguments
-from setuptools import setup, find_packages
+from setuptools import setup, find_namespace_packages
 
 
 short_descr = "Multiscale Tree Graph datastructure and interfaces"
@@ -31,7 +31,7 @@
     license='cecill-c',
     zip_safe=False,
 
-    packages=find_packages('src'),
+    packages=find_namespace_packages(where='src', include=['openalea', 'openalea.*']),
     package_dir={'': 'src'},
     entry_points={},
     keywords='',
diff --git a/src/openalea/__init__.py b/src/openalea/__init__.py
deleted file mode 100644
index a9a6a7a..0000000
--- a/src/openalea/__init__.py
+++ /dev/null
@@ -1,4 +0,0 @@
-
-# {#pkglts,
-__import__('pkg_resources').declare_namespace(__name__)
-# #}