diff --git a/src/wasm/subscript.rs b/src/wasm/subscript.rs
index 495c099..305d501 100644
--- a/src/wasm/subscript.rs
+++ b/src/wasm/subscript.rs
@@ -4,15 +4,14 @@ use serde::Serialize;
 use super::ast_node::WasmAstNode;
 use super::macros::to_wasm;
 use super::to_wasm::ToWasm;
-use super::AdditionalProperties;
 use crate::compare::ElispFact;
 use crate::types::Subscript;
 use crate::wasm::to_wasm::ToWasmStandardProperties;
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct WasmSubscript {
-    #[serde(flatten)]
-    pub(crate) additional_properties: AdditionalProperties,
+    #[serde(rename = "use-brackets-p")]
+    pub(crate) use_brackets: bool,
 }
 
 to_wasm!(
@@ -21,7 +20,7 @@ to_wasm!(
     original,
     wasm_context,
     { WasmAstNode::Subscript(original) },
-    { "TODO".into() },
+    { "subscript".into() },
     {
         let children = original
             .children
@@ -36,7 +35,7 @@ to_wasm!(
         Ok((
             children,
             WasmSubscript {
-                additional_properties: AdditionalProperties::default(),
+                use_brackets: original.use_brackets,
             },
         ))
     }
diff --git a/src/wasm/superscript.rs b/src/wasm/superscript.rs
index 077025f..9f65ede 100644
--- a/src/wasm/superscript.rs
+++ b/src/wasm/superscript.rs
@@ -4,15 +4,14 @@ use serde::Serialize;
 use super::ast_node::WasmAstNode;
 use super::macros::to_wasm;
 use super::to_wasm::ToWasm;
-use super::AdditionalProperties;
 use crate::compare::ElispFact;
 use crate::types::Superscript;
 use crate::wasm::to_wasm::ToWasmStandardProperties;
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct WasmSuperscript {
-    #[serde(flatten)]
-    pub(crate) additional_properties: AdditionalProperties,
+    #[serde(rename = "use-brackets-p")]
+    pub(crate) use_brackets: bool,
 }
 
 to_wasm!(
@@ -21,7 +20,7 @@ to_wasm!(
     original,
     wasm_context,
     { WasmAstNode::Superscript(original) },
-    { "TODO".into() },
+    { "superscript".into() },
     {
         let children = original
             .children
@@ -36,7 +35,7 @@ to_wasm!(
         Ok((
             children,
             WasmSuperscript {
-                additional_properties: AdditionalProperties::default(),
+                use_brackets: original.use_brackets,
             },
         ))
     }