diff --git a/setup.py b/setup.py
index 84657ad..f2dabe9 100755
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@ class CustomBuildExtCommand(build_py):
             self.distribution.data_files.append(
                 (path,
                  [i for i in glob.glob(os.path.join("inkex", "*.inx"))]))
-            self.distribution.data_files.append((path, 'scripts/boxes'))
+            self.distribution.data_files.append((path, ['scripts/boxes']))
         build_py.run(self)
 
 setup(