diff --git a/index.bs b/index.bs
index 85588884..7553aa2a 100644
--- a/index.bs
+++ b/index.bs
@@ -1165,7 +1165,6 @@ partial interface MLContext {
     To <dfn>validate buffer with descriptor</dfn> given |bufferView| and |descriptor|, run the following steps:
   </summary>
   <div class=algorithm-steps>
-    1. If |bufferView| is not an {{MLBufferView}}, return false.
     1. If |bufferView|'s [=element type=] does not match to |descriptor|.{{MLOperandDescriptor/dataType}}  according to [this table](#appendices-mloperanddatatype-arraybufferview-compatibility), return false.
     1. If |bufferView|.\[[ByteLength]] is not equal to the [=byte length=] of |descriptor|, return false.
   </div>