diff --git a/scripts/change_url b/scripts/change_url
index 515f083..2656f17 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -136,7 +136,7 @@ ynh_add_fail2ban_config --use_template --others_var="\
 ynh_script_progression --message="Starting a systemd service..." --weight=2
 
 ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
-sleep 15
+curl --silent --insecure --resolve $domain:443:127.0.0.1 https://$domain$path_url/ -o /dev/null --write-out "%{http_code}" --retry 10 --retry-delay 3
 
 #=================================================
 # RELOAD NGINX
diff --git a/scripts/install b/scripts/install
index a65509f..2c1ccbf 100755
--- a/scripts/install
+++ b/scripts/install
@@ -232,7 +232,7 @@ ynh_script_progression --message="Starting a systemd service..."  --weight=1
 
 # Start a systemd service
 ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
-sleep 15
+curl --silent --insecure --resolve $domain:443:127.0.0.1 https://$domain$path_url/ -o /dev/null --write-out "%{http_code}" --retry 10 --retry-delay 3
 
 #=================================================
 # RELOAD NGINX
diff --git a/scripts/restore b/scripts/restore
index 62997c3..1f0f64f 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -130,7 +130,7 @@ yunohost service add $app --description "Standard Notes - Syncing Server" --log
 ynh_script_progression --message="Starting a systemd service..." --weight=1
 
 ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
-sleep 15
+curl --silent --insecure --resolve $domain:443:127.0.0.1 https://$domain$path_url/ -o /dev/null --write-out "%{http_code}" --retry 10 --retry-delay 3
 
 #=================================================
 # RESTORE THE LOGROTATE CONFIGURATION
diff --git a/scripts/upgrade b/scripts/upgrade
index 549cb13..a50e730 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -266,7 +266,7 @@ ynh_script_progression --message="Starting a systemd service..." --weight=1
 
 # Start a systemd service
 ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
-sleep 15
+curl --silent --insecure --resolve $domain:443:127.0.0.1 https://$domain$path_url/ -o /dev/null --write-out "%{http_code}" --retry 10 --retry-delay 3
 
 #=================================================
 # RELOAD NGINX