diff --git a/HowtoCeph.md b/HowtoCeph.md
index 507a1852..fef534a6 100644
--- a/HowtoCeph.md
+++ b/HowtoCeph.md
@@ -301,7 +301,7 @@ Il suffit de monter le CephFS, il sera utilisable :
 KEY=$(awk '/key/ { print $NF }' </etc/ceph/ceph.client.admin.keyring)
 mkdir /mnt/mycephfs
 mount.ceph $CEPH_MON:/ /mnt/mycephfs/ -o 'name=admin,secret=$KEY'
-cat <<EOF /mnt/mycephfs/truth
+cat <<EOF >/mnt/mycephfs/truth
 slackware is the best
 e ≃ 2.7181828
 EOF