diff --git a/cluster/addons/fluentd-elasticsearch/kibana-image/run.sh b/cluster/addons/fluentd-elasticsearch/kibana-image/run.sh
index b536ef69c55..2d13901e7e7 100755
--- a/cluster/addons/fluentd-elasticsearch/kibana-image/run.sh
+++ b/cluster/addons/fluentd-elasticsearch/kibana-image/run.sh
@@ -17,7 +17,7 @@
 export ELASTICSEARCH_URL=${ELASTICSEARCH_URL:-"http://localhost:9200"}
 echo ELASTICSEARCH_URL=${ELASTICSEARCH_URL}
 
-export KIBANA_BASE_URL=${KIBANA_BASE_URL:-""}
+export KIBANA_BASE_URL=${KIBANA_BASE_URL:-"''"}
 echo "server.basePath: ${KIBANA_BASE_URL}"
 echo "server.basePath: ${KIBANA_BASE_URL}" >> /kibana/config/kibana.yml