diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/tools/showdiffmarc.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/tools/showdiffmarc.tt
index 93edb3982b..49983acc01 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/tools/showdiffmarc.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/tools/showdiffmarc.tt
@@ -31,11 +31,11 @@
             <h1>Original</h1>
             [% IF ( ERROR_FORMATTED1 ) %]
                 <div class="dialog alert">
-                    <p>The biblionumber <em>[% BIBLIONUMBER %]</em> doesn't match any existing record.</p>
+                    <p>The record id <em>[% RECORDID | html %]</em> doesn't match any existing record.</p>
                 </div>
             [% ELSE %]
-                <h2>[% BIBLIOTITLE %]</h2>
-                <pre>[% MARC_FORMATTED1 %]</pre>
+                <h2>[% RECORDTITLE | html %]</h2>
+                <pre>[% MARC_FORMATTED1 | html %]</pre>
             [% END %]
         </div>
         <div id="col2" class="yui-u">
diff --git a/tools/batch_records_ajax.pl b/tools/batch_records_ajax.pl
index 349d858a25..17e8236d32 100755
--- a/tools/batch_records_ajax.pl
+++ b/tools/batch_records_ajax.pl
@@ -107,7 +107,7 @@ foreach my $record (@$records) {
           || q{},
         score => $#$match > -1 ? $match->[0]->{'score'} : 0,
         match_id => $match_id,
-        diff_url => $match_id ? "/cgi-bin/koha/tools/showdiffmarc.pl?batchid=$import_batch_id&importid=$record->{import_record_id}&id=$match_id" : undef
+        diff_url => $match_id ? "/cgi-bin/koha/tools/showdiffmarc.pl?batchid=$import_batch_id&importid=$record->{import_record_id}&id=$match_id&type=$record->{record_type}" : undef
       };
 }
 
diff --git a/tools/showdiffmarc.pl b/tools/showdiffmarc.pl
index 0c585a443d..f8219aa3b6 100755
--- a/tools/showdiffmarc.pl
+++ b/tools/showdiffmarc.pl
@@ -29,23 +29,25 @@ use C4::Context;
 use C4::Output;
 use C4::Auth;
 use C4::Biblio;
+use C4::AuthoritiesMarc;
 use C4::ImportBatch;
 
 use Koha::Biblios;
 
 # Input params
 my $input        = new CGI;
-my $biblionumber = $input->param('id');
+my $recordid = $input->param('id');
 my $importid     = $input->param('importid');
 my $batchid      = $input->param('batchid');
+my $type      = $input->param('type');
 
-if ( not $biblionumber or not $importid ) {
+if ( not $recordid or not $importid ) {
     print $input->redirect("/cgi-bin/koha/errors/404.pl");
     exit;
 }
 
 # Init vars
-my ($recordBiblionumber, $recordImportid, $biblioTitle, $importTitle, $formatted1, $formatted2, $errorFormatted1, $errorFormatted2);
+my ($record, $recordImportid, $recordTitle, $importTitle, $formatted1, $formatted2, $errorFormatted1, $errorFormatted2);
 
 # Prepare template
 my ( $template, $loggedinuser, $cookie ) = get_template_and_user(
@@ -59,14 +61,20 @@ my ( $template, $loggedinuser, $cookie ) = get_template_and_user(
     }
 );
 
-$recordBiblionumber = GetMarcBiblio({
-    biblionumber => $biblionumber,
-    embed_items  => 1,
-});
-if( $recordBiblionumber ) {
-    $formatted1 = $recordBiblionumber->as_formatted;
-    my $biblio = Koha::Biblios->find( $biblionumber );
-    $biblioTitle = $biblio->title;
+if ( $type eq 'biblio' ) {
+    $record = GetMarcBiblio({
+        biblionumber => $recordid,
+        embed_items  => 1,
+    });
+    my $biblio = Koha::Biblios->find( $recordid );
+    $recordTitle = $biblio->title;
+}
+elsif ( $type eq 'auth' ) {
+    $record = GetAuthority( $recordid );
+    $recordTitle = "Authority number " . $recordid; #FIXME we should get the main heading
+}
+if( $record ) {
+    $formatted1 = $record->as_formatted;
 } else {
     $errorFormatted1 = 1;
 }
@@ -82,9 +90,9 @@ if( $importid ) {
 
 $template->param(
     SCRIPT_NAME      => '/cgi-bin/koha/tools/showdiffmarc.pl',
-    BIBLIONUMBER     => $biblionumber,
+    RECORDID         => $recordid,
     IMPORTID         => $importid,
-    BIBLIOTITLE      => $biblioTitle,
+    RECORDTITLE      => $recordTitle,
     IMPORTTITLE      => $importTitle,
     MARC_FORMATTED1  => $formatted1,
     MARC_FORMATTED2  => $formatted2,