diff --git a/third_party/radar/radar_vobc.go b/third_party/radar/radar_vobc.go
index 8a288e7..8f8042e 100644
--- a/third_party/radar/radar_vobc.go
+++ b/third_party/radar/radar_vobc.go
@@ -32,9 +32,7 @@ var (
 )
 
 func Default() RadarVobc {
-	defer func() {
-		initLock.Unlock()
-	}()
+	defer initLock.Unlock()
 	initLock.Lock()
 	if _radar == nil {
 		_radar = &radarVobc{}