diff --git a/doc/src/sgml/ltree.sgml b/doc/src/sgml/ltree.sgml
index ecbf463d8ab..ff3c227727b 100644
--- a/doc/src/sgml/ltree.sgml
+++ b/doc/src/sgml/ltree.sgml
@@ -645,7 +645,7 @@ Europe & Russia*@ & !Transportation
      <literal>siglen</literal> determines the
      signature length in bytes.  The default signature length is 8 bytes.
      The length must be a positive multiple of <type>int</type> alignment
-     (4 bytes on most machines)) up to 2024.  Longer
+     (4 bytes on most machines) up to 2024.  Longer
      signatures lead to a more precise search (scanning a smaller fraction of the index and
      fewer heap pages), at the cost of a larger index.
     </para>