diff --git a/dota.py b/dota.py
index 73b0b77..ec7a77e 100644
--- a/dota.py
+++ b/dota.py
@@ -139,11 +139,15 @@ class Friend(BaseModel):
     }
     for match_ in matches[:limit]:
       duration = '%d:%02d:%02d' % utils.convert_seconds_to_hms(match_['duration'])
+      if match_['party_size'] == None:
+        if Match.filter(match_id=match_['match_id']).exists():
+          match_['party_size'] = Match.get(match_id=match_['match_id']).party_size
+        else:
+          match_['party_size'] = 0
+          summary = f"{duration}"
       if match_['party_size'] and match_['party_size'] > 1:
         summary = f"{match_['party_size']}黑 {duration}"
-      elif match_['party_size'] == None:
-        summary = f"??黑 {duration}"
-      else:
+      elif match_['party_size'] and match_['party_size'] == 1:
         summary = f"单排 {duration}"
 
       if match_['average_rank']:
@@ -228,10 +232,11 @@ def serialize_match_for_discord(match_):
     if Match.filter(match_id=match_['match_id']).exists():
       match_['party_size'] = Match.get(match_id=match_['match_id']).party_size
     else:
+      match_['party_size'] = 0
       summary = f"{match_['duration']}"
   if match_['party_size'] > 1:
     summary = f"{match_['party_size']}黑 {match_['duration']}"
-  else:
+  elif match_['party_size'] == 1:
     summary = f"单排 {match_['duration']}"
 
   radiant = []