diff --git a/upd/fix_cron.sh b/upd/fix_cron.sh
new file mode 100755
index 000000000..aeb172f97
--- /dev/null
+++ b/upd/fix_cron.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Check if there is no crontab
+if [ ! -e "/var/spool/cron" ]; then
+    exit
+fi
+
+# Fix ownership and permissions
+for crn_tab in $(ls /var/spool/cron/); do
+    chown $crn_tab:$crn_tab /var/spool/cron/$crn_tab
+    chmod 600 /var/spool/cron/$crn_tab
+done
+
+exit
+