diff --git a/kibana/config/entrypoint.sh b/kibana/config/entrypoint.sh
index 80cf73cd..87bbef39 100644
--- a/kibana/config/entrypoint.sh
+++ b/kibana/config/entrypoint.sh
@@ -13,7 +13,7 @@ else
   el_url="${ELASTICSEARCH_URL}"
 fi
 
-if [ ${ENABLED_XPACK} != "true" || "x${ELASTICSEARCH_USERNAME}" = "x" || "x${ELASTICSEARCH_PASSWORD}" = "x" ]; then
+if [[ ${ENABLED_XPACK} != "true" || "x${ELASTICSEARCH_USERNAME}" = "x" || "x${ELASTICSEARCH_PASSWORD}" = "x" ]]; then
   auth=""
 else
   auth="--user ${ELASTICSEARCH_USERNAME}:${ELASTICSEARCH_PASSWORD}"