From 76aead490da1fc6286ce9db429570b34f5be7c4c Mon Sep 17 00:00:00 2001
From: Ziang Song <ziang.song@nrgenergy.com>
Date: Thu, 3 Dec 2015 16:40:44 -0500
Subject: https://github.com/gweis/isodate/issues/33

---
 src/isodate/duration.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/isodate/duration.py')

diff --git a/src/isodate/duration.py b/src/isodate/duration.py
index 5408315..7eeffad 100644
--- a/src/isodate/duration.py
+++ b/src/isodate/duration.py
@@ -121,7 +121,10 @@ class Duration(object):
         if self.years:
             params.append('%d years' % self.years)
         if self.months:
-            params.append('%d months' % self.months)
+            fmt = "%d months"
+            if self.months <= 1: 
+                fmt = "%d month"
+            params.append(fmt % self.months)
         params.append(str(self.tdelta))
         return ', '.join(params)
 
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