diff --git a/Dockerfile b/Dockerfile
index 962f109a..54e54f49 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,8 @@
 FROM elasticsearch:5.6-alpine
 
+# log4j2
+RUN echo "-Dlog4j2.formatMsgNoLookups=true" >> /usr/share/elasticsearch/config/jvm.options
+
 ADD config/ /usr/share/elasticsearch/config/
 
 USER root