diff --git a/koha-tmpl/opac-tmpl/bootstrap/en/modules/opac-detail.tt b/koha-tmpl/opac-tmpl/bootstrap/en/modules/opac-detail.tt
index 8752824d8a..4ffcb4e8f9 100644
--- a/koha-tmpl/opac-tmpl/bootstrap/en/modules/opac-detail.tt
+++ b/koha-tmpl/opac-tmpl/bootstrap/en/modules/opac-detail.tt
@@ -130,7 +130,7 @@
                     [% IF ( OPACXSLTDetailsDisplay ) %]
                         [% XSLTBloc | $raw %]
                     [% ELSE %]
-                        <h1 class="title">[% INCLUDE 'biblio-title.inc' %]</h1>
+                        <h2 class="title">[% INCLUDE 'biblio-title.inc' %]</h2>
                         [% IF ( author ) %]<h5 class="author">by <a class="contributors" href="/cgi-bin/koha/opac-search.pl?q=au:[% author |url %]">[% author | html %]</a></h5>[% END %]
 
                         <span class="results_summary">[% UNLESS ( item_level_itypes ) %]
diff --git a/koha-tmpl/opac-tmpl/bootstrap/en/xslt/MARC21slim2OPACDetail.xsl b/koha-tmpl/opac-tmpl/bootstrap/en/xslt/MARC21slim2OPACDetail.xsl
index 656c56bc30..afaa37bcd5 100644
--- a/koha-tmpl/opac-tmpl/bootstrap/en/xslt/MARC21slim2OPACDetail.xsl
+++ b/koha-tmpl/opac-tmpl/bootstrap/en/xslt/MARC21slim2OPACDetail.xsl
@@ -119,17 +119,17 @@
         <!-- Title Statement -->
         <!-- Alternate Graphic Representation (MARC 880) -->
         <xsl:if test="$display880">
-            <h1 class="title" property="alternateName">
+            <h2 class="title" property="alternateName">
                 <xsl:call-template name="m880Select">
                     <xsl:with-param name="basetags">245</xsl:with-param>
                     <xsl:with-param name="codes">abhfgknps</xsl:with-param>
                 </xsl:call-template>
-            </h1>
+            </h2>
         </xsl:if>
 
             <!--Bug 13381 -->
             <xsl:if test="marc:datafield[@tag=245]">
-                <h1 class="title" property="name">
+                <h2 class="title" property="name">
                     <xsl:for-each select="marc:datafield[@tag=245]">
                         <xsl:call-template name="subfieldSelect">
                             <xsl:with-param name="codes">a</xsl:with-param>
@@ -154,7 +154,7 @@
                             </xsl:choose>
                         </xsl:for-each>
                     </xsl:for-each>
-                </h1>
+                </h2>
             </xsl:if>
 
 
diff --git a/koha-tmpl/opac-tmpl/bootstrap/en/xslt/NORMARCslim2OPACDetail.xsl b/koha-tmpl/opac-tmpl/bootstrap/en/xslt/NORMARCslim2OPACDetail.xsl
index 28c770204d..3fa217f51d 100644
--- a/koha-tmpl/opac-tmpl/bootstrap/en/xslt/NORMARCslim2OPACDetail.xsl
+++ b/koha-tmpl/opac-tmpl/bootstrap/en/xslt/NORMARCslim2OPACDetail.xsl
@@ -67,7 +67,7 @@
 
         <!-- Tittel og ansvarsopplysninger -->
         <xsl:if test="marc:datafield[@tag=245]">
-        <h1 class="title">
+        <h2 class="title">
             <xsl:for-each select="marc:datafield[@tag=245]">
                     <xsl:call-template name="subfieldSelect">
                         <xsl:with-param name="codes">a</xsl:with-param>
@@ -89,7 +89,7 @@
                         <xsl:with-param name="codes">np</xsl:with-param>
                     </xsl:call-template>
             </xsl:for-each>
-        </h1>
+        </h2>
         </xsl:if>
 
         <!-- Author Statement -->
diff --git a/koha-tmpl/opac-tmpl/bootstrap/en/xslt/UNIMARCslim2OPACDetail.xsl b/koha-tmpl/opac-tmpl/bootstrap/en/xslt/UNIMARCslim2OPACDetail.xsl
index e5afad7c67..5186823762 100644
--- a/koha-tmpl/opac-tmpl/bootstrap/en/xslt/UNIMARCslim2OPACDetail.xsl
+++ b/koha-tmpl/opac-tmpl/bootstrap/en/xslt/UNIMARCslim2OPACDetail.xsl
@@ -25,7 +25,7 @@
 
   <xsl:if test="marc:datafield[@tag=200]">
     <xsl:for-each select="marc:datafield[@tag=200]">
-      <h1 class="title">
+      <h2 class="title">
         <xsl:call-template name="addClassRtl" />
         <xsl:for-each select="marc:subfield">
           <xsl:choose>
@@ -62,7 +62,7 @@
             </xsl:otherwise>
           </xsl:choose>
         </xsl:for-each>
-      </h1>
+      </h2>
     </xsl:for-each>
   </xsl:if>