diff --git a/vars/nebula.groovy b/vars/nebula.groovy
index 539be15..bc1e3ef 100644
--- a/vars/nebula.groovy
+++ b/vars/nebula.groovy
@@ -4,6 +4,7 @@ import groovy.util.XmlSlurper
 import groovy.util.slurpersupport.GPathResult
 import groovy.util.slurpersupport.NodeChild
 import groovy.xml.XmlUtil
+import org.jenkinsci.plugins.workflow.steps.FlowInterruptedException
 
 class Client {
 
@@ -149,17 +150,16 @@ def runInNewVM(Map args) {
         initWithCredentials(urlCredentialsId, userCredentialsId) { client ->
             client.withNewVM(vmTemplate, terminateOnExit) { host ->
 
-                def sshArgs = "-i \'${VM_SSH_KEY}\' -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null"
+                def sshArgs = "-i '${VM_SSH_KEY}' -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null"
                 
                 // On attend que la connexion SSH soit disponible
-                println "En attente de l'accès SSH..."
-                waitUntil {
-                    try {
-                        sh "ssh -q ${sshArgs} -o ConnectTimeout=1 root@${host} exit"
-                        return true
-                    } catch (e) {
-                        return false
+                println "En attente de l'accès SSH sur la machine ${host}..."                
+                while(true) {
+                    def status = sh script: "nc -zv ${host} 22", returnStatus: true
+                    if (status == 0) {
+                        break;
                     }
+                    sleep(5)
                 }
 
                 // On créait un script temporaire à exécuter sur la machine distante