diff --git a/main.go b/main.go
index 62e8208..d522b77 100644
--- a/main.go
+++ b/main.go
@@ -26,7 +26,7 @@
 
 // concurrence and time
 var start = time.Now()
-var queueForConcurrent = make(chan struct{}, 50)
+var queueForConcurrent = make(chan struct{}, 40)
 var wg sync.WaitGroup
 var numberFiles int = 0