diff --git a/shell/platform/darwin/common/framework/Headers/FlutterCodecs.h b/shell/platform/darwin/common/framework/Headers/FlutterCodecs.h
index 3ba5d4e9c2580..74b4cb60aafb1 100644
--- a/shell/platform/darwin/common/framework/Headers/FlutterCodecs.h
+++ b/shell/platform/darwin/common/framework/Headers/FlutterCodecs.h
@@ -118,7 +118,7 @@ FLUTTER_DARWIN_EXPORT
  *
  * NSAsserts on failure.
  */
-- (void)writeValue:(id)value;
+- (void)writeValue:(nullable id)value;
 @end
 
 /**