diff --git a/util/util_unsafe.go b/util/util_unsafe.go
index beeae29..d098811 100644
--- a/util/util_unsafe.go
+++ b/util/util_unsafe.go
@@ -13,8 +13,11 @@ func BytesToReadOnlyString(b []byte) string {
 }
 
 // StringToReadOnlyBytes returns bytes converted from given string.
-func StringToReadOnlyBytes(s string) []byte {
+func StringToReadOnlyBytes(s string) (bs []byte) {
 	sh := (*reflect.StringHeader)(unsafe.Pointer(&s))
-	bh := reflect.SliceHeader{Data: sh.Data, Len: sh.Len, Cap: sh.Len}
-	return *(*[]byte)(unsafe.Pointer(&bh))
+	bh := (*reflect.SliceHeader)(unsafe.Pointer(&bs))
+	bh.Data = sh.Data
+	bh.Cap = sh.Len
+	bh.Len = sh.Len
+	return
 }