diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml
index 226d6583de7..cef9143a1e3 100644
--- a/doc/src/sgml/monitoring.sgml
+++ b/doc/src/sgml/monitoring.sgml
@@ -831,7 +831,7 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <structfield>state</structfield> is <literal>active</literal> this field shows the
       currently executing query. In all other states, it shows the last query
       that was executed. By default the query text is truncated at 1024
-      characters; this value can be changed via the parameter
+      bytes; this value can be changed via the parameter
       <xref linkend="guc-track-activity-query-size"/>.
      </entry>
     </row>