diff --git a/onnx/onnx_pb.h b/onnx/onnx_pb.h
index 31f3dab8e60..c0a3acd30c2 100644
--- a/onnx/onnx_pb.h
+++ b/onnx/onnx_pb.h
@@ -11,7 +11,7 @@
 // different declarations (dllexport and dllimport). On Linux/Mac, it just
 // resolves to the same "default visibility" setting.
 #if defined(_MSC_VER)
-#if (defined(ONNX_USE_PROTOBUF_SHARED_LIBS) && ONNX_USE_PROTOBUF_SHARED_LIBS == OPTION_ON) || defined(ONNX_BUILD_MAIN_LIB)
+#if (defined(ONNX_USE_PROTOBUF_SHARED_LIBS) && 0 == c_strcmp(ONNX_USE_PROTOBUF_SHARED_LIBS, OPTION_ON)) || defined(ONNX_BUILD_MAIN_LIB)
 #define ONNX_EXPORT __declspec(dllexport)
 #define ONNX_IMPORT __declspec(dllimport)
 #else
@@ -43,7 +43,7 @@
 //
 // This solution is similar to
 // https://github.com/pytorch/pytorch/blob/master/caffe2/core/common.h
-#if (defined(ONNX_USE_PROTOBUF_SHARED_LIBS) && ONNX_USE_PROTOBUF_SHARED_LIBS == OPTION_ON) || defined(ONNX_BUILD_MAIN_LIB)
+#if (defined(ONNX_USE_PROTOBUF_SHARED_LIBS) && 0 == c_strcmp(ONNX_USE_PROTOBUF_SHARED_LIBS, OPTION_ON)) || defined(ONNX_BUILD_MAIN_LIB)
 #define ONNX_API ONNX_EXPORT
 #else
 #define ONNX_API ONNX_IMPORT