diff --git a/scripts/upgrade b/scripts/upgrade
index be80ab0..683f418 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -126,6 +126,11 @@ ynh_script_progression --message="Upgrading php-fpm configuration..." --weight=2
 # Create a dedicated php-fpm config
 ynh_add_fpm_config --phpversion=$YNH_PHP_VERSION --package="$extra_php_dependencies"
 
+# Delete existing ini configuration file (backward compatibility)
+if [ -f /etc/php/$YNH_PHP_VERSION/fpm/conf.d/20-$app.ini ]; then
+	ynh_secure_remove --file=/etc/php/$YNH_PHP_VERSION/fpm/conf.d/20-$app.ini
+fi
+
 #=================================================
 # SPECIFIC UPGRADE
 #=================================================