diff --git a/fix_tei.py b/fix_tei.py
index 9143e4e..da65d39 100644
--- a/fix_tei.py
+++ b/fix_tei.py
@@ -106,6 +106,7 @@ def convert_citations(string):
     """
     citations = []
 
+    # BUG: a dot as in 197f. is not recognized!
     year_citations_pattern = re.compile(r"(§|&#xA7;|&#167;)(§|&#xA7;|&#167;)(?P<citekey>.+?)(\!(?P<pages>.*?))?(§|&#xA7;|&#167;)(§|&#xA7;|&#167;)")
     year_citations = re.findall(year_citations_pattern, string)
     logging.info("Found %s year citations." % len(year_citations))