diff --git a/routes/controller.go b/routes/controller.go
index fb9aba9..f91aee7 100644
--- a/routes/controller.go
+++ b/routes/controller.go
@@ -150,7 +150,7 @@ func handleGetAccount(c *gin.Context, req ControllerBody, workerState *worker.St
 		respondWithError(c, NoAccountLeft)
 		return
 	}
-	workerState.Username = account.Username
+	workerState.SetUsername(account.Username)
 	host := c.RemoteIP()
 	if loginDelay := config.Config.Worker.LoginDelay; loginDelay > 0 {
 		now := time.Now().Unix()
diff --git a/worker/workerState.go b/worker/workerState.go
index 94ce147..a9a6b53 100644
--- a/worker/workerState.go
+++ b/worker/workerState.go
@@ -115,6 +115,12 @@ func (ws *State) Unlock() {
 	ws.mu.Unlock()
 }
 
+func (ws *State) SetUsername(username string) {
+	ws.Lock()
+	defer ws.Unlock()
+	ws.Username = username
+}
+
 func (ws *State) ResetUsername() {
 	ws.Lock()
 	defer ws.Unlock()