diff --git a/tutorials/bios-boot-tutorial/bios-boot-tutorial.py b/tutorials/bios-boot-tutorial/bios-boot-tutorial.py
index ec7585ad14d..1c0cf5998d0 100755
--- a/tutorials/bios-boot-tutorial/bios-boot-tutorial.py
+++ b/tutorials/bios-boot-tutorial/bios-boot-tutorial.py
@@ -13,7 +13,7 @@
 args = None
 logFile = None
 
-unlockTimeout = 99999999999
+unlockTimeout = 999999999
 fastUnstakeSystem = './fast.refund/eosio.system/eosio.system.wasm'
 
 systemAccounts = [