diff --git a/manual/Types/filterchain.html b/manual/Types/filterchain.html
index 8aab924c1..0b2ac6d49 100644
--- a/manual/Types/filterchain.html
+++ b/manual/Types/filterchain.html
@@ -722,8 +722,8 @@ and <q>//</q></p>
   </tr>
   <tr>
     <td>tablength</td>
-    <td>Defaults to <q>8</q></td>
-    <td>No</td>
+    <td>Amount of space characters to replace a tab character with.</td>
+    <td>No; defaults to <q>8</q></td>
   </tr>
 </table>