diff --git a/gpdb-doc/dita/ref_guide/config_params/guc-list.xml b/gpdb-doc/dita/ref_guide/config_params/guc-list.xml
index 2b9398da75b8a2b7f1bae0fe6dd1333a4d7b6b54..46a83874dee46ae72b4d04b890df3764380a1fbf 100644
--- a/gpdb-doc/dita/ref_guide/config_params/guc-list.xml
+++ b/gpdb-doc/dita/ref_guide/config_params/guc-list.xml
@@ -4371,7 +4371,7 @@
           <tbody>
             <row>
               <entry colname="col1">number of bytes</entry>
-              <entry colname="col2">4194304</entry>
+              <entry colname="col2">1048576</entry>
               <entry colname="col3">local<p>system</p><p>restart</p></entry>
             </row>
           </tbody>