diff --git a/containers/zammad/docker-entrypoint.sh b/containers/zammad/docker-entrypoint.sh
index 7decba0..556f984 100755
--- a/containers/zammad/docker-entrypoint.sh
+++ b/containers/zammad/docker-entrypoint.sh
@@ -45,9 +45,9 @@ if [ "$1" = 'zammad-init' ]; then
   # rsync -a ${RSYNC_ADDITIONAL_PARAMS} "${ZAMMAD_TMP_DIR}"/public/assets/images/ "${ZAMMAD_DIR}"/public/assets/images
 
   # shellcheck disable=SC2086
-  rsync --delete --exclude 'public/assets/images/*' --exclude 'storage/fs/*' "${ZAMMAD_TMP_DIR}/" "${ZAMMAD_DIR}"
+  rsync -r ${RSYNC_ADDITIONAL_PARAMS} --delete --exclude 'public/assets/images/*' --exclude 'storage/fs/*' "${ZAMMAD_TMP_DIR}/" "${ZAMMAD_DIR}"
   # shellcheck disable=SC2086
-  rsync "${ZAMMAD_TMP_DIR}"/public/assets/images/ "${ZAMMAD_DIR}"/public/assets/images
+  rsync -r ${RSYNC_ADDITIONAL_PARAMS} "${ZAMMAD_TMP_DIR}"/public/assets/images/ "${ZAMMAD_DIR}"/public/assets/images
 
   until (echo > /dev/tcp/"${POSTGRESQL_HOST}"/"${POSTGRESQL_PORT}") &> /dev/null; do
     echo "zammad railsserver waiting for postgresql server to be ready..."