diff --git a/elasticsearch/Dockerfile b/elasticsearch/Dockerfile
index e3cafd381..a41c393a2 100644
--- a/elasticsearch/Dockerfile
+++ b/elasticsearch/Dockerfile
@@ -1,7 +1,7 @@
 FROM elasticsearch:6.8.20
 
 # Increase ram available
-RUN sed -i "1a ysctl -w vm.max_map_count=262144" /usr/local/bin/docker-entrypoint.sh
+RUN sed -i "1a sysctl -w vm.max_map_count=262144" /usr/local/bin/docker-entrypoint.sh
 
 ### LABELS
 ARG BUILD_ARCH