diff --git a/spec.html b/spec.html
index d5e9c044efb..412286abefb 100644
--- a/spec.html
+++ b/spec.html
@@ -24821,7 +24821,7 @@ <h1>Function.prototype.toString ( )</h1>
           1. Throw a *TypeError* exception.
         </emu-alg>
 
-        <emu-grammar>
+        <emu-grammar type="definition">
           NativeFunction :
             `function` PropertyName[~Yield, ~Await]? `(` FormalParameters[~Yield, ~Await] `)` `{` `[` `native` `code` `]` `}`
         </emu-grammar>