diff --git a/bitcask_test.go b/bitcask_test.go
index 4c60eca..f3c584e 100644
--- a/bitcask_test.go
+++ b/bitcask_test.go
@@ -287,10 +287,9 @@ func TestConcurrent(t *testing.T) {
 			wg := &sync.WaitGroup{}
 
 			go f(wg, 2)
-			wg.Add(1)
-
 			go f(wg, 3)
-			wg.Add(1)
+			go f(wg, 5)
+			wg.Add(3)
 
 			wg.Wait()
 		})
@@ -310,10 +309,9 @@ func TestConcurrent(t *testing.T) {
 			wg := &sync.WaitGroup{}
 
 			go f(wg, 100)
-			wg.Add(1)
-
 			go f(wg, 100)
-			wg.Add(1)
+			go f(wg, 100)
+			wg.Add(3)
 
 			wg.Wait()
 		})