diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index ca590d45bff..f091b084956 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -2360,11 +2360,11 @@ include_dir 'conf.d'
        <table id="synchronous-commit-matrix">
         <title>synchronous_commit Modes</title>
         <tgroup cols="5">
-         <colspec colname="col1" colwidth="1.5*">
-         <colspec colname="col2" colwidth="1*">
-         <colspec colname="col3" colwidth="1*">
-         <colspec colname="col4" colwidth="1*">
-         <colspec colname="col5" colwidth="1*">
+         <colspec colname="col1">
+         <colspec colname="col2">
+         <colspec colname="col3">
+         <colspec colname="col4">
+         <colspec colname="col5">
          <thead>
           <row>
            <entry>synchronous_commit setting</entry>