diff --git a/journals/helpers.py b/journals/helpers.py
index 038acd7289a0582aa10d155cf0df62605d802e0d..2ea2a615529fa1916e9c6fa355fa7382ffe63888 100644
--- a/journals/helpers.py
+++ b/journals/helpers.py
@@ -7,16 +7,6 @@ import re
 from .exceptions import PaperNumberError
 
 
-def issue_doi_label_from_doi_label(doi_label):
-    """
-    Strip the last digits block from the label.
-    """
-    m = re.match(r'[a-zA-Z]+.[0-9]+.[0-9]+', doi_label)
-    s = m.start()
-    e = m.end()
-    return doi_label[s:e]
-
-
 def paper_nr_string(nr):
     if nr < 10:
         return '00' + str(nr)