diff --git a/ecsact/runtime/async.h b/ecsact/runtime/async.h
index 2aed297c..9dc72452 100644
--- a/ecsact/runtime/async.h
+++ b/ecsact/runtime/async.h
@@ -216,7 +216,8 @@ ECSACT_CORE_API_FN(ecsact_async_request_id, ecsact_async_stream)
 ( //
 	ecsact_entity_id    entity,
 	ecsact_component_id component_id,
-	const void*         component_data
+	const void*         component_data,
+	...
 );
 
 #define FOR_EACH_ECSACT_ASYNC_API_FN(fn, ...)              \
diff --git a/ecsact/runtime/core.h b/ecsact/runtime/core.h
index 81fd5a2a..c8a1614c 100644
--- a/ecsact/runtime/core.h
+++ b/ecsact/runtime/core.h
@@ -277,7 +277,8 @@ ECSACT_CORE_API_FN(ecsact_stream_error, ecsact_stream)
 	ecsact_registry_id  registry_id,
 	ecsact_entity_id    entity,
 	ecsact_component_id component_id,
-	const void*         component_data
+	const void*         component_data,
+	...
 );
 
 // # BEGIN FOR_EACH_ECSACT_CORE_API_FN