diff --git a/src/internal_module/httpx/js_module.rs b/src/internal_module/httpx/js_module.rs
index a7f7fd2..97ab5a8 100644
--- a/src/internal_module/httpx/js_module.rs
+++ b/src/internal_module/httpx/js_module.rs
@@ -158,6 +158,7 @@ impl JsClassDef for Buffer {
 
     const FIELDS: &'static [crate::JsClassField<Self::RefType>] = &[
         ("length", Self::js_length, None),
+        ("byteLength", Self::js_length, None),
         ("buffer", Self::js_buffer, None),
     ];