diff --git a/src/yunohost/app.py b/src/yunohost/app.py
index 0a7c92947..291d8c77a 100644
--- a/src/yunohost/app.py
+++ b/src/yunohost/app.py
@@ -108,7 +108,7 @@ def app_fetchlist(url=None, name=None):
     # Rename fetched temp list
     os.rename('%s.tmp' % list_file, list_file)
 
-    os.system("echo '00 00 * * * root yunohost app fetchlist -u %s -n %s > /dev/null 2>&1' >/etc/cron.d/yunohost-applist-%s" % (url, name, name))
+    open("/etc/cron.d/yunohost-applist-%s" % name, "w").write('00 00 * * * root yunohost app fetchlist -u %s -n %s > /dev/null 2>&1\n' % (url, name))
 
     logger.success(m18n.n('appslist_fetched'))