diff --git a/symfony/sms-biuras-notifier/5.3/manifest.json b/symfony/sms-biuras-notifier/5.3/manifest.json
index aa83313e..369ba37b 100644
--- a/symfony/sms-biuras-notifier/5.3/manifest.json
+++ b/symfony/sms-biuras-notifier/5.3/manifest.json
@@ -1,5 +1,5 @@
 {
     "env": {
-        "#1": "SMSBIURAS_DSN=smsbiuras://UID:API_KEY@default?from=FROM&test=0"
+        "#1": "SMSBIURAS_DSN=smsbiuras://UID:API_KEY@default?from=FROM&test_mode=0"
     }
 }