diff --git a/discount/init.py b/discount/init.py
index 506ecbd..b792c53 100644
--- a/discount/init.py
+++ b/discount/init.py
@@ -23,7 +23,7 @@ async def discount_qrcode(request, params_kw):
 	webp = fs.webpath(p)
 	async with get_sor_context(env, 'discount') as sor:
 		biz_date = await env.get_business_date(sor)
-		if biz_date <= expired_date:
+		if biz_date >= expired_date:
 			raise Exception('Promote QRCODE is out of time')
 
 		ret = {