diff --git a/server/src/module/notify/controller/wechat/pay.ts b/server/src/module/notify/controller/wechat/pay.ts
index bead5cc..0073aa4 100644
--- a/server/src/module/notify/controller/wechat/pay.ts
+++ b/server/src/module/notify/controller/wechat/pay.ts
@@ -57,7 +57,7 @@ const NotifyWechatPayAction = <NotifyAction>{
         const xml = await RawBody(ctx.req, {
             length: ctx.request.length,
             limit: '1mb',
-            encoding: ctx.request.charset && 'utf-8'
+            encoding: ctx.request.charset || 'utf-8'
         });
 
         const notify = <WechatPayNotify>await wechatService.parseXML(xml);
diff --git a/server/src/module/oa/controller/service/reply.ts b/server/src/module/oa/controller/service/reply.ts
index 07287e4..23bc4a1 100644
--- a/server/src/module/oa/controller/service/reply.ts
+++ b/server/src/module/oa/controller/service/reply.ts
@@ -27,7 +27,7 @@ const OaReplyAction = <OaAction>{
             : await RawBody(ctx.req, {
                   length: ctx.request.length,
                   limit: '1mb',
-                  encoding: ctx.request.charset && 'utf-8'
+                  encoding: ctx.request.charset || 'utf-8'
               });
 
         const xml = await wechatService.parseXML(bodyXml);