diff --git a/prepare_tei.py b/prepare_tei.py
index 170ee1f..fccf00c 100644
--- a/prepare_tei.py
+++ b/prepare_tei.py
@@ -280,7 +280,7 @@ def fix_document_structure(xml_tree):
 
 # def fix_document_structure ends here
 
-def fix_tei_header(xml_tree):
+def fix_tei_header(xml_tree, bibfile_string):
     """Populate TEI header with mandatory data"""
 
     title_statement = xml_tree.xpath("//t:titleStmt", namespaces=NS_MAP)[0]
@@ -296,7 +296,7 @@ def fix_tei_header(xml_tree):
     # licence_text = etree.SubElement(licence, "p").text = """Distributed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Germany License."""
 
     source_desc = xml_tree.xpath("//t:sourceDesc", namespaces=NS_MAP)[0]
-    bibfile = etree.SubElement(source_desc, "listBibl", source=str(args.bibfile), type="monograph")
+    bibfile = etree.SubElement(source_desc, "listBibl", source=bibfile_string, type="monograph")
 
     profile_desc = etree.SubElement(xml_tree, "profileDesc")
     langusage = etree.SubElement(profile_desc, "langUsage")