diff --git a/specification/common/conref-file.dita b/specification/common/conref-file.dita
index 73d8c5f1..19a35e46 100644
--- a/specification/common/conref-file.dita
+++ b/specification/common/conref-file.dita
@@ -282,13 +282,14 @@ to alert more birds to the presence of your bird feeder.</shortdesc>
 <ph id="groupdefn">The attribute can also include groups of values specified using the same syntax as generalized attributes within <xmlatt>props</xmlatt>; see <xref href="../archSpec/base/generalization-attributes.dita"/> for details on grouping syntax.</ph>
 <ph id="dateformat">The date is specified using the ISO 8601 format: <varname>YYYY</varname>-<varname>MM</varname>-<varname>DD</varname>, where <varname>YYYY</varname> is the year, <varname>MM</varname> is the month (01 to 12), and <varname>DD</varname> is the day (01-31).</ph></lines>
                 </section>
-                <section id="section-9"><title>Reused error conditions</title><ph id="index-sort-as"
-        outputclass="errorcondition">When located within the <xmlelement>indexterm</xmlelement>
-        element, the <xmlelement>sort-as</xmlelement> element is equivalent to
-          <xmlelement>index-sort-as</xmlelement>. It is an error for an
-          <xmlelement>indexterm</xmlelement> element to directly contain both
-          <xmlelement>sort-as</xmlelement> and <xmlelement>index-sort-as</xmlelement>
-      elements.</ph></section>
+                <section id="section-9"><title>Reused error conditions</title><ph id="index-sort-as">When located
+                                within the <xmlelement>indexterm</xmlelement> element, the
+                                        <xmlelement>sort-as</xmlelement> element is equivalent to
+                                        <xmlelement>index-sort-as</xmlelement>. It is an error for
+                                an <xmlelement>indexterm</xmlelement> element to directly contain
+                                both <xmlelement>sort-as</xmlelement> and
+                                        <xmlelement>index-sort-as</xmlelement>
+                        elements.</ph></section>
     <section id="section-10">
       <title>Constraints material</title>
       <ul id="dtd-domains-contribution">