diff --git a/sample/kms_sample.py b/sample/kms_sample.py
index 0b14bd2..0ef2195 100644
--- a/sample/kms_sample.py
+++ b/sample/kms_sample.py
@@ -58,7 +58,7 @@
         kms_account.enable_key(key_meta.KeyId)
 
         # schedule deletion a custom key 
-        kms_account.schedule_key_deletion(key_meta.KeyId)
+        kms_account.schedule_key_deletion(key_meta.KeyId, 7)
         
         # cancel a custom key deletion 
         kms_account.cancel_key_deletion(key_meta.KeyId)