diff --git a/common/varbin/data.go b/common/varbin/data.go
index 4c0960de..f2ff78d7 100644
--- a/common/varbin/data.go
+++ b/common/varbin/data.go
@@ -106,7 +106,7 @@ func read(r Reader, order binary.ByteOrder, data reflect.Value, isArrayMapValue
 		}
 	case reflect.Array:
 		arrayLen := data.Len()
-		itemSize := data.Type().Elem().Len()
+		itemSize := int(data.Type().Elem().Size())
 		if itemSize > 0 {
 			buf := make([]byte, itemSize*arrayLen)
 			_, err := io.ReadFull(r, buf)
@@ -393,7 +393,7 @@ func intItemBaseDataSize(data reflect.Value) int {
 		reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
 		reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
 		reflect.Float32, reflect.Float64, reflect.Complex64, reflect.Complex128:
-		return itemType.Len()
+		return int(itemType.Size())
 	default:
 		return -1
 	}