diff --git a/setup.py b/setup.py
index 20caf3c..fecfdec 100755
--- a/setup.py
+++ b/setup.py
@@ -67,11 +67,11 @@ class install_data(module_install_data.install_data):
                             os.chmod(out,chmod)
                         self.outfiles.append(out)
 
-data_files = [('/usr/share/calculate/xdm', [('data/cmd_login', 0755),
+data_files = [('/usr/share/calculate/xdm', [('data/cmd_login', 0o755),
                                              'data/functions',
-                                             ('data/xdm', 0755),
-                                             ('data/setbg', 0755),
-                                             ('data/check_domain_fastlogin', 0755)]),
+                                             ('data/xdm', 0o755),
+                                             ('data/setbg', 0o755),
+                                             ('data/check_domain_fastlogin', 0o755)]),
               ('/usr/share/calculate/xdm/login.d',
                                             ['data/login.d/00init',
                                              'data/login.d/02sddm',