diff --git a/docs/getting-started-guides/docker-multinode/master.sh b/docs/getting-started-guides/docker-multinode/master.sh
index 04c96059b67..33ead98ea73 100755
--- a/docs/getting-started-guides/docker-multinode/master.sh
+++ b/docs/getting-started-guides/docker-multinode/master.sh
@@ -121,12 +121,17 @@ start_k8s(){
             fi
             ifconfig docker0 down
             yum -y -q install bridge-utils && brctl delbr docker0 && systemctl restart docker
+        ;;
         ubuntu|debian)
             DOCKER_CONF="/etc/default/docker"
             echo "DOCKER_OPTS=\"\$DOCKER_OPTS --mtu=${FLANNEL_MTU} --bip=${FLANNEL_SUBNET}\"" | sudo tee -a ${DOCKER_CONF}
             ifconfig docker0 down
             apt-get install bridge-utils && brctl delbr docker0 && service docker restart
         ;;
+        *)
+            echo "Unsupported operations system $lsb_dist"
+            exit 1
+        ;;
     esac
 
     # sleep a little bit
diff --git a/docs/getting-started-guides/docker-multinode/worker.sh b/docs/getting-started-guides/docker-multinode/worker.sh
index 1705c60b3a6..b8be0168b5a 100755
--- a/docs/getting-started-guides/docker-multinode/worker.sh
+++ b/docs/getting-started-guides/docker-multinode/worker.sh
@@ -130,6 +130,10 @@ start_k8s() {
             ifconfig docker0 down
             apt-get install bridge-utils && brctl delbr docker0 && service docker restart
         ;;
+        *)
+            echo "Unsupported operations system $lsb_dist"
+            exit 1
+        ;;
     esac
 
     # sleep a little bit