diff --git a/doc/langref.html.in b/doc/langref.html.in
index 7948c2defc..0f90a88822 100644
--- a/doc/langref.html.in
+++ b/doc/langref.html.in
@@ -11955,17 +11955,6 @@ fn readU32Be() u32 {}
             </ul>
           </td>
         </tr>
-        <tr>
-          <th scope="row">
-            <pre>{#syntax#}false{#endsyntax#}</pre>
-          </th>
-          <td>
-            The boolean value {#syntax#}false{#endsyntax#}.
-            <ul>
-              <li>See also {#link|Primitive Values#}</li>
-            </ul>
-          </td>
-        </tr>
         <tr>
           <th scope="row">
             <pre>{#syntax#}fn{#endsyntax#}</pre>
@@ -12041,17 +12030,6 @@ fn readU32Be() u32 {}
             </ul>
           </td>
         </tr>
-        <tr>
-          <th scope="row">
-            <pre>{#syntax#}null{#endsyntax#}</pre>
-          </th>
-          <td>
-            The optional value {#syntax#}null{#endsyntax#}.
-            <ul>
-              <li>See also {#link|null#}</li>
-            </ul>
-          </td>
-        </tr>
         <tr>
           <th scope="row">
             <pre>{#syntax#}or{#endsyntax#}</pre>
@@ -12190,17 +12168,6 @@ fn readU32Be() u32 {}
             </ul>
           </td>
         </tr>
-        <tr>
-          <th scope="row">
-            <pre>{#syntax#}true{#endsyntax#}</pre>
-          </th>
-          <td>
-            The boolean value {#syntax#}true{#endsyntax#}.
-            <ul>
-              <li>See also {#link|Primitive Values#}</li>
-            </ul>
-          </td>
-        </tr>
         <tr>
           <th scope="row">
             <pre>{#syntax#}try{#endsyntax#}</pre>
@@ -12214,17 +12181,6 @@ fn readU32Be() u32 {}
             </ul>
           </td>
         </tr>
-        <tr>
-          <th scope="row">
-            <pre>{#syntax#}undefined{#endsyntax#}</pre>
-          </th>
-          <td>
-            {#syntax#}undefined{#endsyntax#} can be used to leave a value uninitialized.
-            <ul>
-              <li>See also {#link|undefined#}</li>
-            </ul>
-          </td>
-        </tr>
         <tr>
           <th scope="row">
             <pre>{#syntax#}union{#endsyntax#}</pre>