diff --git a/packages/compiler/src/compiler/codegen.ts b/packages/compiler/src/compiler/codegen.ts
index 0e278b4..7fff9d4 100644
--- a/packages/compiler/src/compiler/codegen.ts
+++ b/packages/compiler/src/compiler/codegen.ts
@@ -241,7 +241,7 @@ ${joinItems(sa.captureBinders.map(binderTypeGuard(t)), '\n')}
         switch (s.triggerType) {
             case 'asserted':
                 entity = t`{
-                    assert(${ctx.argDecl(t, '__vs', '__SYNDICATE__.AnyValue')}, ${ctx.argDecl(t, '__handle', '__SYNDICATE__.Handle')}) {
+                    assert: (${ctx.argDecl(t, '__vs', '__SYNDICATE__.AnyValue')}, ${ctx.argDecl(t, '__handle', '__SYNDICATE__.Handle')}) => {
                         ${guardBody(terminalWrap(t, s.terminal, walk(s.body)))}
                     }
                 }`;
@@ -253,7 +253,7 @@ ${joinItems(sa.captureBinders.map(binderTypeGuard(t)), '\n')}
                 break;
             case 'message':
                 entity = t`{
-                    message(${ctx.argDecl(t, '__vs', '__SYNDICATE__.AnyValue')}) {
+                    message: (${ctx.argDecl(t, '__vs', '__SYNDICATE__.AnyValue')}) => {
                         ${guardBody(terminalWrap(t, s.terminal, walk(s.body)))}
                     }
                 }`;