diff --git a/manifest.json b/manifest.json
index bee9d93..08388b3 100644
--- a/manifest.json
+++ b/manifest.json
@@ -36,13 +36,6 @@
                 },
                 "example": "johndoe@example.com"
             },
-            {
-                "name": "port",
-                "ask": {
-                    "en": "Enter a port(default:9000). If the port is occupied by any other app, the installation will chose another one."
-				},
-                "default": "9000"
-            },
             {
                 "name": "is_public",
                 "type": "boolean",
diff --git a/scripts/install b/scripts/install
index c4832e9..e608e1a 100644
--- a/scripts/install
+++ b/scripts/install
@@ -26,7 +26,6 @@ domain=$YNH_APP_ARG_DOMAIN
 path_url="/"
 admin_email=$YNH_APP_ARG_EMAIL
 admin_pass=$(ynh_string_random 24)
-port=$YNH_APP_ARG_PORT
 is_public=$YNH_APP_ARG_IS_PUBLIC
 
 
@@ -70,7 +69,7 @@ ynh_app_setting_set "$app" is_public "$is_public"
 #=================================================
 
 # Find a free port
-ynh_find_port "$port"
+port=(ynh_find_port "9000")
 # Open this port
 yunohost firewall allow Both "$port" 2>&1
 ynh_app_setting_set "$app" port "$port"
diff --git a/scripts/restore b/scripts/restore
index 4503f16..6ef80e6 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -66,6 +66,9 @@ ynh_restore_file "$final_path"
 datadir="/home/yunohost.app/${app}/storage"
 ynh_restore_file "$datadir"
 
+# Open this port
+yunohost firewall allow Both "$port" 2>&1
+
 #=================================================
 # RECREATE THE DEDICATED USER
 #=================================================