diff --git a/packages/nitrogen/src/syntax/swift/SwiftCxxBridgedType.ts b/packages/nitrogen/src/syntax/swift/SwiftCxxBridgedType.ts
index e335d02c3..b610b24d7 100644
--- a/packages/nitrogen/src/syntax/swift/SwiftCxxBridgedType.ts
+++ b/packages/nitrogen/src/syntax/swift/SwiftCxxBridgedType.ts
@@ -672,7 +672,7 @@ case ${i}:
 { () -> bridge.${bridge.specializationName} in
   let __promise = ${makePromise}()
   ${swiftParameterName}
-    .then({ __result in __promise.pointee.resolve(${arg}) })
+    .then({ __result in __promise.pointee.resolve(${indent(arg, '      ')}) })
     .catch({ __error in __promise.pointee.reject(__error.toCpp()) })
   return __promise
 }()`.trim()