diff --git a/src/core/types/user.ts b/src/core/types/user.ts
index 67d015e6..25d29d0e 100644
--- a/src/core/types/user.ts
+++ b/src/core/types/user.ts
@@ -18,7 +18,7 @@ export interface BuddyCategoryType {
 export interface CoreInfo {
     uid: string;
     uin: string;
-    nick: string;
+    nick?: string;
     remark: string;
 }
 
diff --git a/src/onebot/helper/data.ts b/src/onebot/helper/data.ts
index 867149ec..be562a5a 100644
--- a/src/onebot/helper/data.ts
+++ b/src/onebot/helper/data.ts
@@ -23,7 +23,7 @@ export class OB11Construct {
             ...rawFriend.baseInfo,
             ...rawFriend.coreInfo,
             user_id: parseInt(rawFriend.coreInfo.uin),
-            nickname: rawFriend.coreInfo.nick,
+            nickname: rawFriend.coreInfo.nick ?? "",
             remark: rawFriend.coreInfo.remark ?? rawFriend.coreInfo.nick,
             sex: this.sex(rawFriend.baseInfo.sex),
             level: 0,