diff --git a/llmage/accounting.py b/llmage/accounting.py
index a30ba9c..6b9ad01 100644
--- a/llmage/accounting.py
+++ b/llmage/accounting.py
@@ -15,11 +15,15 @@ async def checkCustomerBalance(llmid, userorgid):
 			e = Exception(f'llm({llmid}) not exists')
 			exception(f'{e}')
 			raise e
-		if llms[0].ownerid == userorgid:
+		llm = llms[0]
+		if llm.ownerid == userorgid:
 			return True
 		balance = await getCustomerBalance(sor, userorgid)
-		if balance is None: balance = 0.00
-		return llms[0].ppid and llms[0].min_balance < balance
+		if balance is None: 
+			balance = 0.00
+		if llm.min_balance is None:
+			llm.min_balance = 0.00
+		return llm.ppid and llm.min_balance < balance
 	return False
 
 async def llm_accounting(request, llmid,