diff --git a/test_api_validate.sh b/test_api_validate.sh
index e835a13..ba308b5 100644
--- a/test_api_validate.sh
+++ b/test_api_validate.sh
@@ -1,6 +1,6 @@
 curl -X POST http://localhost:13579/api/license/validate \
   -H "Content-Type: application/json" \
-  -H "X-Machine-ID: ABCDEF123456AA" \
+  -H "X-Machine-ID: ABCDEF123456" \
   -d '{
     "payload": "eyJtYWNoaW5lX2lkIjoiQUJDREVGMTIzNDU2IiwiZXhwaXJ5IjoiMjAyNi0wNi0xMyIsImZlYXR1cmVzIjpbImdwdSIsIm9jciJdfQ==",
     "signature": "MEYCIQC/sk5X+yDS3rttB8mCEd2JfHaeBXBdlmgmQCcoPPtFqwIhAP7u5Hzm06trr7ghE/hvfg7kl0M4P3swQddNbkXEQisi"