diff --git a/src/inc/ssh.php b/src/inc/ssh.php
index b4712f12dcece23ea2b3b6528d62d5f416c3526d..3b33bf9e35850e9e3a2529a423727b0a919b86a1 100644
--- a/src/inc/ssh.php
+++ b/src/inc/ssh.php
@@ -38,7 +38,7 @@ function scp_a_file($conf, $con, $ip_addr, $local_file, $remote_dest, $mode){
 		ssh2_scp_send($ssh, $local_file, $remote_dest, $mode);
 		ssh2_disconnect($ssh);
 	}else{
-		$cmd = "scp -o \"StrictHostKeyChecking no\" -i /etc/openstack-cluster-installer/id_rsa $local_file root@$ip_addr:$remote_dest";
+		$cmd = "scp -o GlobalKnownHostsFile=/dev/null -o UserKnownHostsFile=/dev/null -o \"StrictHostKeyChecking no\" -i /etc/openstack-cluster-installer/id_rsa $local_file root@$ip_addr:$remote_dest";
 		$output = array();
 		$return_var = 0;
 		exec($cmd, $output, $return_var);