diff --git a/crates/oxc_ast/src/ast/js.rs b/crates/oxc_ast/src/ast/js.rs
index d0999fbcf..9cfd174c1 100644
--- a/crates/oxc_ast/src/ast/js.rs
+++ b/crates/oxc_ast/src/ast/js.rs
@@ -1701,6 +1701,7 @@ pub struct BindingRestElement<'a> {
 /// Function Definitions
 #[derive(Debug, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize), serde(rename_all = "camelCase"))]
+#[cfg_attr(all(feature = "serde", feature = "wasm"), derive(tsify::Tsify))]
 pub struct Function<'a> {
     pub r#type: FunctionType,
     #[cfg_attr(feature = "serde", serde(flatten))]
diff --git a/crates/oxc_ast/src/ast/ts.rs b/crates/oxc_ast/src/ast/ts.rs
index 79e03ccee..0ac3a8414 100644
--- a/crates/oxc_ast/src/ast/ts.rs
+++ b/crates/oxc_ast/src/ast/ts.rs
@@ -954,7 +954,7 @@ pub struct Decorator<'a> {
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-#[cfg_attr(feature = "serde", derive(Serialize), serde(tag = "type", rename_all = "camelCase"))]
+#[cfg_attr(feature = "serde", derive(Serialize), serde(rename_all = "camelCase"))]
 #[cfg_attr(all(feature = "serde", feature = "wasm"), derive(tsify::Tsify))]
 pub enum ModifierKind {
     Abstract,