diff --git a/asterix-installer/src/main/resources/zookeeper/stop_zk b/asterix-installer/src/main/resources/zookeeper/stop_zk
index d8615d9..9bef86e 100755
--- a/asterix-installer/src/main/resources/zookeeper/stop_zk
+++ b/asterix-installer/src/main/resources/zookeeper/stop_zk
@@ -2,5 +2,5 @@
 shift 1
 for zk_host in  $@
 do
-  ssh $zk_host "kill -9 `jps | grep QuorumPeerMain | cut -d " "  -f1`" &
+  ssh $zk_host "kill -15 `jps | grep QuorumPeerMain | cut -d " "  -f1`" &
 done