diff --git a/src/deb/init.d/elasticsearch b/src/deb/init.d/elasticsearch
index c5fa992a359..fd0b9dcf848 100644
--- a/src/deb/init.d/elasticsearch
+++ b/src/deb/init.d/elasticsearch
@@ -92,7 +92,7 @@ PID_FILE=/var/run/$NAME.pid
 DAEMON=$ES_HOME/bin/elasticsearch
 DAEMON_OPTS="-p $PID_FILE -Des.config=$CONF_FILE -Des.path.home=$ES_HOME -Des.path.logs=$LOG_DIR -Des.path.data=$DATA_DIR -Des.path.work=$WORK_DIR -Des.path.conf=$CONF_DIR"
 
-export ES_MIN_MEM ES_MAX_MEM
+export ES_HEAP_SIZE
 
 # Check DAEMON exists
 test -x $DAEMON || exit 0