diff --git a/src/room.ts b/src/room.ts
index ced477c2068d0015b45d411f67d6cd61ef924d29..037d9595cfabcbc617df08ff1d4e202235a5d29b 100644
--- a/src/room.ts
+++ b/src/room.ts
@@ -120,6 +120,8 @@ export class Room extends EventEmitter implements Sayable {
       }
       await Promise.all(this.obj.memberList.map(c => c.ready(contactGetter)))
 
+      this.obj.nickMap = this.parseNickMap(this.obj.memberList)
+
       return
 
     } catch (e) {
@@ -186,14 +188,16 @@ export class Room extends EventEmitter implements Sayable {
       log.warn('Room', 'parse() on a empty rawObj?')
       return null
     }
+
+    const memberList  = this.parseMemberList(rawObj.MemberList)
+
     return {
       id:           rawObj.UserName
       , encryId:    rawObj.EncryChatRoomId // ???
       , topic:      rawObj.NickName
       , ownerUin:   rawObj.OwnerUin
 
-      , memberList: this.parseMemberList(rawObj.MemberList)
-      , nickMap:    this.parseNickMap(rawObj.MemberList)
+      , memberList
     }
   }
 
@@ -204,19 +208,16 @@ export class Room extends EventEmitter implements Sayable {
     return rawMemberList.map(m => Contact.load(m.UserName))
   }
 
-  private parseNickMap(memberList): Map<string, string> {
+  private parseNickMap(memberList: Contact[]): Map<string, string> {
     const nickMap: Map<string, string> = new Map<string, string>()
-    let contact
     if (memberList && memberList.map) {
-      memberList.forEach(m => {
-        contact = Contact.load(m.UserName)
-
+      memberList.forEach(contact => {
         /**
          * ISSUE #64 emoji need to be striped
          * ISSUE #104 never use remark name because sys group message will never use that
          */
-        nickMap[m.UserName] = UtilLib.stripEmoji(
-          m.DisplayName || m.NickName
+        nickMap[contact.UserName] = UtilLib.stripEmoji(
+          contact.DisplayName || contact.NickName
         )
       })
     }