diff --git a/db/kvstore/etcdclient.go b/db/kvstore/etcdclient.go
index 0b97039..6935296 100644
--- a/db/kvstore/etcdclient.go
+++ b/db/kvstore/etcdclient.go
@@ -455,6 +455,7 @@
 func (c *EtcdClient) AcquireLock(lockName string, timeout int) error {
 	duration := GetDuration(timeout)
 	ctx, cancel := context.WithTimeout(context.Background(), duration)
+	defer cancel()
 	session, _ := v3Concurrency.NewSession(c.ectdAPI, v3Concurrency.WithContext(ctx))
 	mu := v3Concurrency.NewMutex(session, "/devicelock_"+lockName)
 	if err := mu.Lock(context.Background()); err != nil {
@@ -462,7 +463,6 @@
 		return err
 	}
 	c.addLockName(lockName, mu, session)
-	cancel()
 	return nil
 }