diff --git a/setup.py b/setup.py
index f42c8b8b..30c0096b 100644
--- a/setup.py
+++ b/setup.py
@@ -51,7 +51,7 @@
 extensions = [
     Extension(
         'cgat.Components',
-        ['cgat/Components/Components.pyx', 'cgat/Components/connected_components.cpp', 'cgat/Components/connected_components.h'],
+        ['cgat/Components/Components.pyx', 'cgat/Components/connected_components.cpp'],
         include_dirs=[os.path.join('cgat', 'Components')] + conda_includes,
         language="c++",
     ),