diff --git a/worker.go b/worker.go
index 332f772..5904e39 100644
--- a/worker.go
+++ b/worker.go
@@ -63,7 +63,7 @@ func (w *Worker) run() {
 		}()
 
 		for f := range w.task {
-			if nil == f {
+			if f == nil {
 				w.pool.decRunning()
 				w.pool.workerCache.Put(w)
 				return
diff --git a/worker_func.go b/worker_func.go
index b13fde1..76e96a3 100644
--- a/worker_func.go
+++ b/worker_func.go
@@ -63,7 +63,7 @@ func (w *WorkerWithFunc) run() {
 		}()
 
 		for args := range w.args {
-			if nil == args {
+			if args == nil {
 				w.pool.decRunning()
 				w.pool.workerCache.Put(w)
 				return