From 5aaeac6f16477793c50e1b6af0a4123b14ecd0db Mon Sep 17 00:00:00 2001
From: Dan Puttick <dputtick@users.noreply.github.com>
Date: Mon, 17 Jul 2017 10:10:21 -0400
Subject: [PATCH] Refactor FileBase.extension

---
 kittengroomer/helpers.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kittengroomer/helpers.py b/kittengroomer/helpers.py
index 45ba4e9..9b747de 100644
--- a/kittengroomer/helpers.py
+++ b/kittengroomer/helpers.py
@@ -49,10 +49,10 @@ class FileBase(object):
     @property
     def extension(self):
         _, ext = os.path.splitext(self.filename)
-        ext = ext.lower()
         if ext == '':
-            ext = None
-        return ext
+            return None
+        else:
+            return ext.lower()
 
     @property
     def maintype(self):