diff --git a/qrcode/config/config.php b/qrcode/config/config.php
index 8312259..cea86f7 100755
--- a/qrcode/config/config.php
+++ b/qrcode/config/config.php
@@ -30,5 +30,6 @@ function getDbInstance() {
         'password' => DATABASE_PASSWORD,
         'db'=> DATABASE_NAME,
         'port' => DATABASE_PORT,
+        'prefix' => DATABASE_PREFIX,
         'charset' => DATABASE_CHARSET));
 }