diff --git a/include/onnxruntime/core/session/onnxruntime_c_api.h b/include/onnxruntime/core/session/onnxruntime_c_api.h
index 098de14bdfd61..d0eab46ea1bbd 100644
--- a/include/onnxruntime/core/session/onnxruntime_c_api.h
+++ b/include/onnxruntime/core/session/onnxruntime_c_api.h
@@ -310,7 +310,7 @@ ORT_RUNTIME_CLASS(Node);
 ORT_RUNTIME_CLASS(Graph);
 ORT_RUNTIME_CLASS(Model);
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 typedef _Return_type_success_(return == 0) OrtStatus* OrtStatusPtr;
 #else
 typedef OrtStatus* OrtStatusPtr;