diff --git a/install_windows/01_install_backuppc.sh b/install_windows/01_install_backuppc.sh
index 9147daf..edfed6d 100755
--- a/install_windows/01_install_backuppc.sh
+++ b/install_windows/01_install_backuppc.sh
@@ -24,3 +24,7 @@ echo "PasswordAuthentication no" >> /etc/sshd_config  # securisation ssh : refus
 netsh advfirewall firewall add rule name="SSH-Hole Port 22" dir=in action=allow protocol=TCP localport=22 remoteip=129.20.203.16 profile=domain,private,public                  # ouverture port pour ssh
 netsh advfirewall firewall add rule name="ICMP Allow incoming V4 echo request" protocol=icmpv4:8,any dir=in action=allow remoteip=129.20.203.16 profile=domain,private,public   # ouverture port pour ping
 net start sshd                                        # ssh au demarrage
+
+if [[ ! -f /cygdrive/c/backuppc_ipr/etc/ssh_host_ecdsa_key.pub ]]; then
+  printf "Erreur lors de l'installation, merci de relancer avec les droits Administrateur\n"
+fi