diff --git a/src/wasm/special_block.rs b/src/wasm/special_block.rs
index ea191e3b..6455885e 100644
--- a/src/wasm/special_block.rs
+++ b/src/wasm/special_block.rs
@@ -2,10 +2,12 @@ use serde::Deserialize;
 use serde::Serialize;
 
 use super::ast_node::WasmAstNode;
+use super::headline::Noop;
 use super::macros::to_wasm;
 use super::to_wasm::ToWasm;
 use super::AdditionalProperties;
 use crate::compare::ElispFact;
+use crate::types::GetAffiliatedKeywords;
 use crate::types::SpecialBlock;
 use crate::wasm::to_wasm::ToWasmStandardProperties;
 
@@ -13,6 +15,10 @@ use crate::wasm::to_wasm::ToWasmStandardProperties;
 pub struct WasmSpecialBlock {
     #[serde(flatten)]
     pub(crate) additional_properties: AdditionalProperties,
+    #[serde(rename = "type")]
+    pub(crate) block_type: String,
+    pub(crate) parameters: Option<String>,
+    pub(crate) results: Noop,
 }
 
 to_wasm!(
@@ -21,8 +27,12 @@ to_wasm!(
     original,
     wasm_context,
     { WasmAstNode::SpecialBlock(original) },
-    { "TODO".into() },
+    { "special-block".into() },
     {
+        let additional_properties = original
+            .get_affiliated_keywords()
+            .to_wasm(wasm_context.clone())?;
+
         let children = original
             .children
             .iter()
@@ -36,7 +46,10 @@ to_wasm!(
         Ok((
             children,
             WasmSpecialBlock {
-                additional_properties: AdditionalProperties::default(),
+                additional_properties,
+                block_type: original.block_type.to_owned(),
+                parameters: original.parameters.map(|s| s.to_owned()),
+                results: Noop {},
             },
         ))
     }