diff --git a/wcsinst/wcsinstd/deploy.py b/wcsinst/wcsinstd/deploy.py
index 7c793bf..d030c9a 100644
--- a/wcsinst/wcsinstd/deploy.py
+++ b/wcsinst/wcsinstd/deploy.py
@@ -55,6 +55,7 @@ class DeployInstance(object):
 
         z = zipfile.ZipFile(os.path.join(self.skel_dir, 'export.wcs'), 'r')
 
+        os.umask(0022)
         for f in z.namelist():
             path = os.path.join(self.collectivity_install_dir, f)
             data = z.read(f)