diff --git a/src/server/packets/GetCurLineupDataCsReq.ts b/src/server/packets/GetCurLineupDataCsReq.ts
index b6c5ec0..b8971f4 100644
--- a/src/server/packets/GetCurLineupDataCsReq.ts
+++ b/src/server/packets/GetCurLineupDataCsReq.ts
@@ -4,7 +4,7 @@ import Packet from "../kcp/Packet";
 import Session from "../kcp/Session";
 
 export default async function handle(session: Session, packet: Packet) {
-    let lineup = await session.player.getLineup();
+    const lineup = await session.player.getLineup();
 
     session.send("GetCurLineupDataScRsp", {
         retcode: 0,
diff --git a/src/server/packets/JoinLineupCsReq.ts b/src/server/packets/JoinLineupCsReq.ts
index ea3740f..5391ffa 100644
--- a/src/server/packets/JoinLineupCsReq.ts
+++ b/src/server/packets/JoinLineupCsReq.ts
@@ -8,7 +8,7 @@ export default async function handle(session: Session, packet: Packet) {
     const body = packet.body as JoinLineupCsReq;
     session.send("JoinLineupScRsp", { retcode: 0 });
 
-    let lineup = await session.player.getLineup();
+    const lineup = await session.player.getLineup();
     const slot = body.slot || 0;
     const avatarList = [];
     for (const avatarId in lineup) {
diff --git a/src/server/packets/SetLineupNameCsReq.ts b/src/server/packets/SetLineupNameCsReq.ts
index a25bc71..2a78ed8 100644
--- a/src/server/packets/SetLineupNameCsReq.ts
+++ b/src/server/packets/SetLineupNameCsReq.ts
@@ -5,7 +5,7 @@ import Session from "../kcp/Session";
 export default async function handle(session: Session, packet: Packet) {
     const body = packet.body as SetLineupNameCsReq;
 
-    let curLineup = await session.player.getLineup();
+    const curLineup = await session.player.getLineup();
     curLineup.name = body.name;
     session.player.setLineup(curLineup);
     session.player.save();