diff --git a/mlir/include/mlir/ExecutionEngine/AsyncRuntime.h b/mlir/include/mlir/ExecutionEngine/AsyncRuntime.h
--- a/mlir/include/mlir/ExecutionEngine/AsyncRuntime.h
+++ b/mlir/include/mlir/ExecutionEngine/AsyncRuntime.h
@@ -37,10 +37,10 @@
 //===----------------------------------------------------------------------===//
 
 // Runtime implementation of `async.token` data type.
-typedef struct AsyncToken MLIR_AsyncToken;
+typedef struct AsyncToken AsyncToken;
 
 // Runtime implementation of `async.group` data type.
-typedef struct AsyncGroup MLIR_AsyncGroup;
+typedef struct AsyncGroup AsyncGroup;
 
 // Async runtime uses LLVM coroutines to represent asynchronous tasks. Task
 // function is a coroutine handle and a resume function that continue coroutine