diff --git a/app/check_setup.php b/app/check_setup.php
index ff48662..cbf1a20 100644
--- a/app/check_setup.php
+++ b/app/check_setup.php
@@ -32,11 +32,14 @@ if (! function_exists('dom_import_simplexml')) {
     die('PHP extension required: DOM');
 }
 
-// Check PDO Sqlite
-if (! extension_loaded('pdo_sqlite')) {
+if (DB_DRIVER === 'sqlite' && ! extension_loaded('pdo_sqlite')) {
     die('PHP extension required: pdo_sqlite');
 }
 
+if (DB_DRIVER === 'postgres' && ! extension_loaded('pdo_pgsql')) {
+    die('PHP extension required: pdo_pgsql');
+}
+
 // Check extension: mbstring (simpleValidator)
 if (! extension_loaded('mbstring')) {
     die('PHP extension required: mbstring');