diff --git a/doc/src/sgml/pgtrgm.sgml b/doc/src/sgml/pgtrgm.sgml
index 9f9482ef273..b8e0df6c03f 100644
--- a/doc/src/sgml/pgtrgm.sgml
+++ b/doc/src/sgml/pgtrgm.sgml
@@ -263,23 +263,6 @@
      </para>
     </listitem>
    </varlistentry>
-   <varlistentry id="guc-pgtrgm-strict-word-similarity-threshold" xreflabel="pg_trgm.strict_word_similarity_threshold">
-    <term>
-     <varname>pg_trgm.strict_word_similarity_threshold</varname> (<type>real</type>)
-     <indexterm>
-      <primary>
-       <varname>pg_trgm.strict_word_similarity_threshold</varname> configuration parameter
-      </primary>
-     </indexterm>
-    </term>
-    <listitem>
-     <para>
-      Sets the current strict word similarity threshold that is used by the
-      <literal>&lt;&lt;%</literal> and <literal>%&gt;&gt;</literal> operators.  The threshold
-      must be between 0 and 1 (default is 0.5).
-     </para>
-    </listitem>
-   </varlistentry>
   </variablelist>
  </sect2>