diff --git a/scripts/helpers b/scripts/helpers
new file mode 100644
index 0000000..f91730f
--- /dev/null
+++ b/scripts/helpers
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+source /usr/share/yunohost/helpers
+
+#
+# Helper to start/stop/.. a systemd service from a yunohost context,
+# *and* the systemd service itself needs to be able to run yunohost
+# commands.
+# 
+# Hence the need to release the lock during the operation
+#
+# usage : ynh_systemctl yolo restart
+#
+function ynh_systemctl()
+{
+  local ACTION="$1"
+  local SERVICE="$2"
+  local LOCKFILE="/var/run/moulinette_yunohost.lock"
+
+  # Launch the action
+  sudo systemctl "$ACTION" "$SERVICE" &
+  local SYSCTLACTION=$!
+
+  # Save and release the lock...
+  cp $LOCKFILE $LOCKFILE.bkp.$$
+  rm $LOCKFILE
+  
+  # Wait for the end of the action
+  wait $SYSCTLACTION
+
+  # Make sure the lock is released...
+  while [ -f $LOCKFILE ]
+  do
+    sleep 0.1
+  done
+
+  # Restore the old lock
+  mv $LOCKFILE.bkp.$$ $LOCKFILE
+}
diff --git a/scripts/install b/scripts/install
index d5082d3..3d8e28a 100644
--- a/scripts/install
+++ b/scripts/install
@@ -29,6 +29,7 @@ firmware_nonfree=${5}
 
 if ! $upgrade; then
 
+  source ./helpers
   source ./prerequisites
 
   # Check arguments
@@ -52,10 +53,7 @@ if ! $upgrade; then
 fi
   
 # Check domain/path availability
-sudo yunohost app checkurl ${domain}${url_path} -a hotspot 
-if [ ! $? -eq 0 ]; then
-  exit 1
-fi
+ynh_webpath_register hotspot $domain $url_path || exit 1
 
 # Install packages
 packages='php5-fpm sipcalc hostapd iptables iw dnsmasq'
@@ -211,7 +209,7 @@ if [ "${wifi_device}" == none ]; then
 fi
 
 if ! $upgrade; then
-  sudo systemctl start ynh-hotspot
+  ynh_systemctl start ynh-hotspot
 fi
 
 sudo yunohost app ssowatconf
diff --git a/scripts/remove b/scripts/remove
index bd5ffd8..9d7681d 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -17,11 +17,13 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+source ./helpers
+
 # Retrieve arguments
 domain=$(sudo yunohost app setting hotspot domain)
 
 # The End
-sudo systemctl stop ynh-hotspot
+ynh_systemctl stop ynh-hotspot
 sudo systemctl disable ynh-hotspot
 sudo yunohost service remove ynh-hotspot
 sudo rm -f /etc/systemd/system/ynh-hotspot.service /usr/local/bin/ynh-hotspot
diff --git a/scripts/upgrade b/scripts/upgrade
index 2f6aa8f..5174922 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -12,6 +12,7 @@ path=$(ynh_setting hotspot path)
 wifi_ssid=$(ynh_setting hotspot wifi_ssid)
 wifi_passphrase=$(ynh_setting hotspot wifi_passphrase)
 
+source ./helpers
 source ./prerequisites
 
 if dpkg -l firmware-linux-nonfree &> /dev/null; then
@@ -40,6 +41,6 @@ if [ -z "$(ynh_setting hotspot ip6_firewall)" ]; then
   sudo yunohost app setting hotspot ip6_firewall -v "${ip6_firewall}"
 fi
 
-sudo systemctl start ynh-hotspot
+ynh_systemctl start ynh-hotspot
 
 exit 0