diff --git a/doc/langref.html.in b/doc/langref.html.in
index e7e662ebc3e293085c0fffe451946606b6bd15a6..935a835a96182b8d385f2e5e7e1a3ce05883d13b 100644
--- a/doc/langref.html.in
+++ b/doc/langref.html.in
@@ -1372,7 +1372,7 @@ unwrapped == 1234{#endsyntax#}</pre>
                           without evaluating {#syntax#}b{#endsyntax#}. Otherwise, returns {#syntax#}b{#endsyntax#}.
           </td>
           <td>
-            <pre>{#syntax#}false and true == false{#endsyntax#}</pre>
+            <pre>{#syntax#}(false and true) == false{#endsyntax#}</pre>
           </td>
         </tr>
         <tr>