diff --git a/bin/slubsipbuilderbagit.pl b/bin/slubsipbuilderbagit.pl
index 30bd0a1ac6acf32838c74a2071065a18e3d85a6f..201ba4d8705a10ca016a964f66e08918fb70f87f 100644
--- a/bin/slubsipbuilderbagit.pl
+++ b/bin/slubsipbuilderbagit.pl
@@ -71,7 +71,6 @@ package SLUB::LZA::SIPBuilderBagIt;
     use Try::Tiny;
     use XML::LibXML;
     use XML::XPath;
-    use XML::LibXSLT;
 
     our $VERBOSE = 0;            # print output switch 0 => on, 1 and larger = off
     our $with_debug = 0;         # output debug infos and files
@@ -185,8 +184,6 @@ package SLUB::LZA::SIPBuilderBagIt;
         my $key    = shift;
         my $schema = shift;
 
-        #### get XSLT
-
         my $ua = LWP::UserAgent->new;
         $ua->agent("MyApp/0.1 ");
         $ua->timeout(3600); #1h
@@ -212,17 +209,11 @@ package SLUB::LZA::SIPBuilderBagIt;
             my $recordData = $xp->findnodes_as_string('/*[local-name()="searchRetrieveResponse"]/*[local-name()="records"]/*[local-name()="record"]/*[local-name()="recordData"]/*');
             if (!$recordData) { croak("ERROR: Did not get any <recordData/> for PPN '$ppn' using '$sru'");}
             my $marcblob = $parser->parse_string($recordData);
-
-
-            my $marcblob_patched = SLUB::LZA::SIPBuilderBagIt::patch_marc_response($marcblob);
             if ($with_debug) {
-                say "write DEBUG_${ppn}_marc_unpatched.xml";
-                SLUB::LZA::SIPBuilderBagIt::write_file("DEBUG_${ppn}_marc_unpatched.xml", $marcblob);
                 say "write DEBUG_${ppn}_marc.xml";
                 SLUB::LZA::SIPBuilderBagIt::write_file("DEBUG_${ppn}_extracted_marc_record.xml", $marcblob);
             }
-
-            return $marcblob_patched->toString();
+            return $marcblob;
         }
         else {
             carp("Problem asking catalogue at $url using $ppn");
@@ -246,43 +237,6 @@ package SLUB::LZA::SIPBuilderBagIt;
         return 1;
     }
 
-    sub patch_marc_response($){
-        if(! defined $_[0]) { croak "marcobject not defined!"; }
-        if($_[0] eq ""){ die "invalid parameters."; }
-
-        my $marcobj           = shift; # marcobj expected as XML Parser object
-        my $xslt_patch_string = <<'PATCH2';
-<?xml version="1.0" encoding="UTF-8"?>
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-    xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://www.loc.gov/MARC21/slim" xmlns:srw="http://www.loc.gov/zing/srw/"
-    exclude-result-prefixes="srw" version="1.0">
-    <xsl:template match="/record">
-        <xsl:element name="collection">
-            <xsl:element name="record" namespace="http://www.loc.gov/MARC21/slim">
-                <xsl:apply-templates select="@*"/>
-                <xsl:apply-templates select="node()"/>
-            </xsl:element>
-        </xsl:element>
-    </xsl:template>
-    <xsl:template match="*">
-        <xsl:element name="{local-name()}" namespace="http://www.loc.gov/MARC21/slim">
-            <xsl:apply-templates select="node() | @*"/>
-        </xsl:element>
-    </xsl:template>
-    <xsl:template match="@*">
-        <xsl:attribute name="{local-name()}">
-            <xsl:value-of select="."/>
-        </xsl:attribute>
-    </xsl:template>
-</xsl:stylesheet>
-PATCH2
-        my $xslt       = XML::LibXSLT->new();
-        my $xslt_patch = XML::LibXML->load_xml(string => $xslt_patch_string, no_cdata => 1);
-        my $stylesheet = $xslt->parse_stylesheet($xslt_patch);
-        my $result     = $stylesheet->transform($marcobj);
-
-        return $result;
-    }
 
     sub generateBagName($$$){
         my $file_date = $_[0];