diff --git a/zimbra/certificat/renew_cert_acmesh_zimbra.sh b/zimbra/certificat/renew_cert_acmesh_zimbra.sh
index 1c78c8e..26ab83b 100644
--- a/zimbra/certificat/renew_cert_acmesh_zimbra.sh
+++ b/zimbra/certificat/renew_cert_acmesh_zimbra.sh
@@ -20,4 +20,4 @@ if  [ $CERT_RCODE -eq 1 ]; then
         echo "erreur dans la mise en place du certificat"
         exit 1;
 fi
-su - zimbra -c zmcontrol restart
+su - zimbra -c "zmcontrol restart"