diff --git a/lib/majsoul/analyze.js b/lib/majsoul/analyze.js
index 03d3896..af57bb8 100644
--- a/lib/majsoul/analyze.js
+++ b/lib/majsoul/analyze.js
@@ -356,7 +356,7 @@ function analyzeGameRecord(record_list){
         }
         for (let i = 0; i < record.accounts.length; i ++ ){
             let acc = record.accounts[i];
-            let pos = acc.seat;
+            let pos = acc.seat || 0;
             let pdata = gamedata.playerdata[pos];
             pdata.id = acc.account_id;
             pdata.name = acc.nickname;
@@ -366,7 +366,7 @@ function analyzeGameRecord(record_list){
         }
         for (let i = 0; i < gamedata.roomdata.player; i ++ ){
             let point = record.result.players[i];
-            let pos = point.seat;
+            let pos = point.seat || 0;
             let pdata = gamedata.playerdata[pos];
             pdata.finalpoint = point.part_point_1;
             pdata.deltapt = point.grading_score;