diff --git a/index.bs b/index.bs
index dcdb48d..b58e51c 100644
--- a/index.bs
+++ b/index.bs
@@ -104,20 +104,10 @@ enum MLDataType {
 };
 
 dictionary MLTensor {
-  required MLResource data;
+  required ArrayBufferView data;
   required sequence<unsigned long> dimensions;
 };
 
-// This should be aligned with WebNN. It is different from the spec of WebNN
-// because in the first version we do not involve any hardware acceleration. We
-// should update it later.
-typedef ArrayBufferView MLBufferView;
-
-// This should be aligned with WebNN. It is different from the spec of WebNN
-// because in the first version we do not involve any hardware acceleration. We
-// should update it later.
-typedef MLBufferView MLResource;
-
 dictionary MLTensorInfo {
   required DOMString name;
   required MLDataType type;