diff --git a/manifest.json b/manifest.json
index 63815e6..97191c7 100644
--- a/manifest.json
+++ b/manifest.json
@@ -31,11 +31,12 @@
         "install" : [
             {
                 "name": "domain",
-                "type": "domain"
+                "type": "domain",
+                "example": "domain.org"
             },
             {
                 "name": "path",
-                "type": "path",
+                "type": "path", 
                 "example": "/blog",
                 "default": "/blog"
             },
diff --git a/scripts/install b/scripts/install
index 9481c2d..c8ee86f 100644
--- a/scripts/install
+++ b/scripts/install
@@ -129,12 +129,12 @@ ynh_script_progression --message="Building $app... (this will take some time and
 pushd "$final_path" || ynh_die
 
 	ynh_use_nodejs
-	ynh_exec_warn_less yarn install --non-interactive --silent
-	ynh_exec_warn_less yarn global add knex-migrator
-	ynh_exec_warn_less NODE_ENV=production knex-migrator init
-	ynh_exec_warn_less yarn global add grunt-cli ember-cli
-	ynh_exec_warn_less NODE_ENV=production grunt symlink
-	ynh_exec_warn_less NODE_ENV=production grunt init --force
+	yarn install --non-interactive --silent
+	yarn global add knex-migrator
+	NODE_ENV=production knex-migrator init
+	yarn global add grunt-cli ember-cli
+	NODE_ENV=production grunt symlink
+	NODE_ENV=production grunt init --force
 
 popd || ynh_die
 
diff --git a/scripts/restore b/scripts/restore
index 405d5e9..68709ce 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -39,6 +39,8 @@ port=$(ynh_app_setting_get --app=$app --key=port)
 #=================================================
 ynh_script_progression --message="Validating restoration parameters..."
 
+ynh_webpath_available --domain=$domain --path_url=$path_url \
+	|| ynh_die --message="Path not available: ${domain}${path_url}"
 test ! -d $final_path \
 	|| ynh_die --message="There is already a directory: $final_path "
 
diff --git a/scripts/upgrade b/scripts/upgrade
index a2af1bc..cf364d6 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -156,12 +156,12 @@ then
 	ynh_script_progression --message="Building $app... (this will take some time and resources!)"
 
 	pushd "$final_path" || ynh_die
-		ynh_exec_warn_less yarn install
-		ynh_exec_warn_less yarn global add knex-migrator
-		ynh_exec_warn_less NODE_ENV=production knex-migrator init
-		ynh_exec_warn_less yarn global add grunt
-		ynh_exec_warn_less NODE_ENV=production grunt symlink
-		ynh_exec_warn_less NODE_ENV=production grunt init --force
+		yarn install
+		yarn global add knex-migrator
+		NODE_ENV=production knex-migrator init
+		yarn global add grunt
+		NODE_ENV=production grunt symlink
+		NODE_ENV=production grunt init --force
 
 	popd || ynh_die
 fi