diff --git a/shadirconcurrent/main.go b/shadirconcurrent/main.go
index c304b94..a03894a 100644
--- a/shadirconcurrent/main.go
+++ b/shadirconcurrent/main.go
@@ -6,10 +6,9 @@ import "io"
 import "log"
 import "os"
 import "path/filepath"
-import "sync/atomic"
+import "time"
 
 var chan_hash chan string
-var running int32
 
 func walk(path string, info os.FileInfo, err error) error {
 	if err != nil {
@@ -20,7 +19,6 @@ func walk(path string, info os.FileInfo, err error) error {
 	if info.IsDir() {
 		return nil
 	} else {
-		atomic.AddInt32(&running, 1)
 		go hash(info.Name(), path)
 	}
 	return nil
@@ -54,10 +52,12 @@ func main() {
 	if err := filepath.Walk(os.Args[1], walk); err != nil {
 		panic(err)
 	}
-	for str := range chan_hash {
-		fmt.Println(str)
-		atomic.AddInt32(&running, -1)
-		if running <= 0 {
+
+	for {
+		select {
+		case str := <-chan_hash:
+			fmt.Println(str)
+		case <-time.After(10 * time.Millisecond):
 			return
 		}
 	}