diff --git a/src/data/epub_files/epubintro-sources.xhtml b/src/data/epub_files/epubintro-sources.xhtml
index 4d9214e..cd5c267 100644
--- a/src/data/epub_files/epubintro-sources.xhtml
+++ b/src/data/epub_files/epubintro-sources.xhtml
@@ -36,6 +36,6 @@ The Deutsche Nationalbibliothek lists this publication in the Deutsche Nationalb
 AdditionalInformation
 
 <p>Edition Open Sources<br />
-series number</p>
+eoaseries number</p>
 
 </body></html>
diff --git a/src/data/epub_files/epubintro.xhtml b/src/data/epub_files/epubintro.xhtml
index c97536a..740e505 100644
--- a/src/data/epub_files/epubintro.xhtml
+++ b/src/data/epub_files/epubintro.xhtml
@@ -39,6 +39,6 @@ The Deutsche Nationalbibliothek lists this publication in the Deutsche Nationalb
 AdditionalInformation
 
 <p>Max Planck Research Library for the History and Development of Knowledge<br />
-mprlseries number</p>
+eoaseries number</p>
 
 </body></html>
diff --git a/src/imxml2epub.py b/src/imxml2epub.py
index 9822707..385e19a 100755
--- a/src/imxml2epub.py
+++ b/src/imxml2epub.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8; mode: python -*-
-# Time-stamp: <2021-07-02 12:15:51 (kthoden)>
+# Time-stamp: <2021-11-15 21:09:52 (kthoden)>
 
 """ Convert a customized DocBook XML file into a set of files that
 constitute the contents of an EPUB file.
@@ -658,7 +658,7 @@ def add_css_snippet(css_snippet, css_file):
 strIntroHTML = re.sub("author", strAuthorString, strIntroHTML)
 strIntroHTML = re.sub("TITLE", strTitleString, strIntroHTML)
 strIntroHTML = re.sub("year", cfgPublication.get("Technical", "PublicationYear"), strIntroHTML)
-strIntroHTML = re.sub("mprlseries", publication_series, strIntroHTML)
+strIntroHTML = re.sub("eoaseries", publication_series, strIntroHTML)
 strIntroHTML = re.sub("number", publication_number, strIntroHTML)
 strIntroHTML = re.sub("epubisbn", publication_isbn, strIntroHTML)
 strIntroHTML = re.sub("pubdoi", publication_doi, strIntroHTML)