diff --git a/bench_test.go b/bench_test.go
index 46f5f83..d091d84 100644
--- a/bench_test.go
+++ b/bench_test.go
@@ -21,3 +21,11 @@ func BenchmarkExpressions(b *testing.B) {
 		compiler.Run()
 	}
 }
+
+func BenchmarkHello(b *testing.B) {
+	compiler := build.New("examples/hello")
+
+	for i := 0; i < b.N; i++ {
+		compiler.Run()
+	}
+}
diff --git a/src/build/fs/Walk.go b/src/build/fs/Walk.go
index 78d6043..ce22ac5 100644
--- a/src/build/fs/Walk.go
+++ b/src/build/fs/Walk.go
@@ -5,8 +5,6 @@ import (
 	"unsafe"
 )
 
-const blockSize = 4096
-
 // Walk calls your callback function for every file name inside the directory.
 // It doesn't distinguish between files and directories.
 func Walk(directory string, callBack func(string)) error {
@@ -17,7 +15,7 @@ func Walk(directory string, callBack func(string)) error {
 	}
 
 	defer syscall.Close(fd)
-	buffer := make([]byte, blockSize)
+	buffer := make([]byte, 1024)
 
 	for {
 		n, err := syscall.ReadDirent(fd, buffer)