diff --git a/scripts/upgrade b/scripts/upgrade
index 122761e..e229f02 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -139,7 +139,7 @@ ynh_install_app_dependencies $pkg_dependencies
 ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=2
 
 # Create a dedicated PHP-FPM config
-ynh_add_fpm_config --phpversion=$phpversion --usage=$fpm_usage --footprint=$fpm_footprint
+ynh_add_fpm_config --phpversion=$YNH_PHP_VERSION --usage=$fpm_usage --footprint=$fpm_footprint
 phpversion=$YNH_PHP_VERSION
 
 #=================================================