diff --git a/gluon/contrib/plural_rules/fr.py b/gluon/contrib/plural_rules/fr.py
index 4237c0e3..590f11c6 100644
--- a/gluon/contrib/plural_rules/fr.py
+++ b/gluon/contrib/plural_rules/fr.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# -*- coding: utf8 -*-
+# -*- coding: utf-8 -*-
 # Plural-Forms for fr (French))
 
 nplurals=2  # French language has 2 forms:
@@ -15,3 +15,55 @@ get_plural_id = lambda n: int(n != 1)
 # for words (or phrases) not found in plural_dict dictionary
 # construct_plural_form = lambda word, plural_id: (word + 'suffix')
 
+irregular={
+    'aïeul': 'aïeux',
+    'bonhomme': 'bonshommes',
+    'ciel': 'cieux',
+    'oeil': 'yeux',
+    'œil': 'yeux',
+    'madame': 'mesdames',
+    'mademoiselle': 'mesdemoiselles',
+    'monsieur': 'messieurs',
+    'bijou': 'bijoux',
+    'caillou': 'cailloux',
+    'chou': 'choux',
+    'genou': 'genoux',
+    'hibou': 'hiboux',
+    'joujou': 'joujoux',
+    'pou': 'poux',
+    'corail': ' coraux',
+    'émail': 'émaux',
+    'travail': 'travaux',
+    'vitrail': 'vitraux',
+    'soupirail': 'soupiraux',
+    'bail': 'baux',
+    'fermail': 'fermaux',
+    'ventail': 'ventaux',
+    'bleu': 'bleus',
+    'pneu': 'pneus',
+    'émeu': 'émeus',
+    'enfeu': 'enfeus',
+    #'lieu': 'lieus', # poisson
+
+}
+
+def construct_plural_form(word, plural_id):
+    u"""
+    >>> [construct_plural_form(x, 1) for x in \
+         [ 'bleu', 'nez', 'sex', 'bas', 'gruau', 'jeu', 'journal',\
+          'chose' ]]
+    ['bleus', 'nez', 'sex', 'bas', 'gruaux', 'jeux', 'journaux', 'choses']
+    """
+    if word in irregular:
+        return irregular[word]
+    if word[-1:] in ('s', 'x', 'z'):
+        return word
+    if word[-2:] in ('au', 'eu'):
+        return word + 'x'
+    if word[-2:] == 'al':
+        return word[0:-2] + 'aux'
+    return word + 's'
+
+if __name__ == '__main__':
+    import doctest
+    doctest.testmod()