diff --git a/files/etc/init.d/volatile-client-macs b/files/etc/init.d/volatile-client-macs
index 7b12913..e31ce26 100644
--- a/files/etc/init.d/volatile-client-macs
+++ b/files/etc/init.d/volatile-client-macs
@@ -15,7 +15,7 @@ start() {
     # We mount a tmpfs so that the client database will be stored in memory only
     mount -t tmpfs / "$tmpdir"
     cp -a /etc/oui-tertf/client.db "$tmpdir"
-    shred /etc/oui-tertf/client.db ||  rm -f /etc/oui-tertf/client.db
+    shred --force --remove  /etc/oui-tertf/client.db ||  rm -f /etc/oui-tertf/client.db
     # If this script runs multiple times, we accumulate mounts; we try to avoid having mounts over mounts, so we unmount any existing tmpfs
     umount -t tmpfs -l /etc/oui-tertf