diff --git a/cm_bot_hal.py b/cm_bot_hal.py
index 7bee02b..fefb89f 100644
--- a/cm_bot_hal.py
+++ b/cm_bot_hal.py
@@ -184,7 +184,7 @@ class CM_BOT_HAL:
             password = f_password
         ) == False:
             return(f'[Fail login] {f_username} cannot login.')
-        amount = cm_bot.get_user_credit() - 0.01
+        amount = round(cm_bot.get_user_credit() - 0.01, 2)
         if amount <= 0.01:
             return(f'[No enough credit] {f_username} do not have enough credit.')
         if cm_bot.transfer_credit(t_username, t_password, amount) == True: