diff --git a/koha-tmpl/intranet-tmpl/prog/en/xslt/MARC21slim2intranetDetail.xsl b/koha-tmpl/intranet-tmpl/prog/en/xslt/MARC21slim2intranetDetail.xsl
index c5c4b733b0..7fcd66af8e 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/xslt/MARC21slim2intranetDetail.xsl
+++ b/koha-tmpl/intranet-tmpl/prog/en/xslt/MARC21slim2intranetDetail.xsl
@@ -281,8 +281,6 @@
         </span>
        </xsl:if>
 
-       <abbr class="unapi-id" title="koha:biblionumber:{marc:datafield[@tag=999]/marc:subfield[@code='c']}" ><!-- unAPI --></abbr>
-
        <xsl:if test="marc:datafield[@tag=020]">
         <span class="results_summary"><span class="label">ISBN: </span>
         <xsl:for-each select="marc:datafield[@tag=020]">
diff --git a/koha-tmpl/intranet-tmpl/prog/en/xslt/UNIMARCslim2intranetDetail.xsl b/koha-tmpl/intranet-tmpl/prog/en/xslt/UNIMARCslim2intranetDetail.xsl
index ed6f5a0f86..13714d4954 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/xslt/UNIMARCslim2intranetDetail.xsl
+++ b/koha-tmpl/intranet-tmpl/prog/en/xslt/UNIMARCslim2intranetDetail.xsl
@@ -132,8 +132,6 @@
 
   <xsl:call-template name="tag_215" />
 
-  <abbr class="unapi-id" title="koha:biblionumber:{marc:datafield[@tag=090]/marc:subfield[@code='a']}"><!-- unAPI --></abbr>
-
 <xsl:if test="marc:controlfield[@tag=009]">
     <li><strong>PPN: </strong>
       <xsl:value-of select="marc:controlfield[@tag=009]"/>
diff --git a/koha-tmpl/opac-tmpl/prog/en/xslt/MARC21slim2OPACDetail.xsl b/koha-tmpl/opac-tmpl/prog/en/xslt/MARC21slim2OPACDetail.xsl
index 3c6077e856..2cde9f6345 100644
--- a/koha-tmpl/opac-tmpl/prog/en/xslt/MARC21slim2OPACDetail.xsl
+++ b/koha-tmpl/opac-tmpl/prog/en/xslt/MARC21slim2OPACDetail.xsl
@@ -302,8 +302,6 @@
         </span>
        </xsl:if>
 
-       <abbr class="unapi-id" title="koha:biblionumber:{marc:datafield[@tag=999]/marc:subfield[@code='c']}" ><!-- unAPI --></abbr>
-
        <xsl:if test="marc:datafield[@tag=020]">
         <span class="results_summary"><span class="label">ISBN: </span>
         <xsl:for-each select="marc:datafield[@tag=020]">
diff --git a/koha-tmpl/opac-tmpl/prog/en/xslt/UNIMARCslim2OPACDetail.xsl b/koha-tmpl/opac-tmpl/prog/en/xslt/UNIMARCslim2OPACDetail.xsl
index ed8a4e0ae2..3683246c70 100644
--- a/koha-tmpl/opac-tmpl/prog/en/xslt/UNIMARCslim2OPACDetail.xsl
+++ b/koha-tmpl/opac-tmpl/prog/en/xslt/UNIMARCslim2OPACDetail.xsl
@@ -148,8 +148,6 @@
 
   <xsl:call-template name="tag_215" />
 
-  <abbr class="unapi-id" title="koha:biblionumber:{marc:datafield[@tag=090]/marc:subfield[@code='a']}"><!-- unAPI --></abbr>
-
   <xsl:if test="marc:datafield[@tag=010]/marc:subfield[@code='a']">
     <span class="results_summary"><span class="label">ISBN: </span>
     <xsl:for-each select="marc:datafield[@tag=010]">