diff --git a/arch/wasm32/wasm.js b/arch/wasm32/wasm.js
index 4f9ed366..d0731efd 100644
--- a/arch/wasm32/wasm.js
+++ b/arch/wasm32/wasm.js
@@ -284,6 +284,7 @@ var unwind = (function() {
   return {
     _Unwind_RaiseException: NYI('_Unwind_RaiseException'),
     _Unwind_DeleteException: NYI('_Unwind_DeleteException'),
+    _Unwind_ForcedUnwind: NYI('_Unwind_ForcedUnwind'),
   };
 })();