diff --git a/call/pay.go b/call/pay.go
index e22bbbd..e845a94 100644
--- a/call/pay.go
+++ b/call/pay.go
@@ -242,7 +242,7 @@ func RechargeCallback(r *common.RechargeOrder, success bool, payAccount, extra s
 				if count > 0 {
 					val := rand.Intn(count)
 					log.Info("val:%v", val)
-					if val <= ticket.CurProb {
+					if val < ticket.CurProb {
 						AddUserDiscountTicket(uid, ticket.DiscountAmount, ticket.RechargeAmount, -1, 0, true)
 						SendMailWithContent(uid, SystemTitle, fmt.Sprintf(EmailDiscount, ticket.DiscountAmount/common.DecimalDigits, ticket.RechargeAmount/common.DecimalDigits))
 					} else if nextTicket.Id > 0 {