diff --git a/scripts/install b/scripts/install
index bd92d28..f27be8f 100644
--- a/scripts/install
+++ b/scripts/install
@@ -66,8 +66,6 @@ ynh_app_setting_set $app is_public $is_public
 
 # Find a free port
 port=$(ynh_find_port 4010)
-# Open this port
-yunohost firewall allow --no-upnp TCP $port 2>&1
 ynh_app_setting_set $app port $port
 
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 99a778a..9943548 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -52,9 +52,6 @@ ynh_restore_file "/etc/nginx/conf.d/$domain.d/$app.conf"
 
 ynh_restore_file "$final_path"
 
-# Open this port
-yunohost firewall allow Both "$port" 2>&1
-
 #=================================================
 # RESTORE THE MYSQL DATABASE
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index b8ab2c1..153d8a3 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -90,6 +90,16 @@ sudo rm -R "$tmpdir1/ghost.zip"
 sudo cp -ar "$tmpdir/content" "${final_path}"
 sudo rm -R "$tmpdir"
 
+#=================================================
+# CLOSE A PORT
+#=================================================
+
+if yunohost firewall list | grep -q "\- $port$"
+then
+	echo "Close port $port"
+	yunohost firewall disallow TCP $port 2>&1
+fi
+
 #=================================================
 # SPECIFIC SETUP
 #=================================================