diff --git a/doc/langref.html.in b/doc/langref.html.in
index 40c2e431a3..33a93268cb 100644
--- a/doc/langref.html.in
+++ b/doc/langref.html.in
@@ -2048,7 +2048,7 @@ unwrapped == 1234{#endsyntax#}</pre>
                           without evaluating {#syntax#}b{#endsyntax#}. Otherwise, returns {#syntax#}b{#endsyntax#}.
           </td>
           <td>
-            <pre>{#syntax#}false or true == true{#endsyntax#}</pre>
+            <pre>{#syntax#}(false or true) == true{#endsyntax#}</pre>
           </td>
         </tr>
         <tr>