diff --git a/scripts/upgrade b/scripts/upgrade
index cf4cfd8..c85d5fe 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -147,12 +147,23 @@ ynh_system_user_create --username=$app
 #=================================================
 ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=2
 
+# If php has changed, remove the old fpm config file
+if [ "$phpversion" != $YNH_PHP_VERSION ]
+then
+    ynh_backup_if_checksum_is_different --file="/etc/php/$phpversion/fpm/pool.d/$app.conf"
+    ynh_secure_remove --file="/etc/php/$phpversion/fpm/pool.d/$app.conf"
+    ynh_systemd_action --service_name="php${phpversion}-fpm" --action=reload
+    ynh_secure_remove --file="/etc/php/$phpversion/fpm/conf.d/20-$app.ini"
+
+    phpversion="$YNH_PHP_VERSION"
+fi
+
 # Recreate a dedicated PHP-FPM config
 ynh_add_fpm_config --phpversion=$phpversion --usage=$fpm_usage --footprint=$fpm_footprint --package="$extra_php_dependencies"
 
 # Delete existing ini configuration file (backward compatibility)
 if [ -f /etc/php/$phpversion/fpm/conf.d/20-$app.ini ]; then
-	ynh_secure_remove --file=/etc/php/$phpversion/fpm/conf.d/20-$app.ini
+    ynh_secure_remove --file=/etc/php/$phpversion/fpm/conf.d/20-$app.ini
 fi
 
 #=================================================