From e48dd0e14b14b2b85f6c3c37888fc3cf0ffc1e7d Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Fri, 12 Feb 2016 13:54:04 +0900
Subject: [PATCH] Fix fallback logic in sphinx.utils.images:get_image_size()

---
 sphinx/util/images.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sphinx/util/images.py b/sphinx/util/images.py
index d130ade326..d445acb057 100644
--- a/sphinx/util/images.py
+++ b/sphinx/util/images.py
@@ -26,7 +26,7 @@ def get_image_size(filename):
         if size[0] == -1:
             size = None
 
-        if Image:  # fallback to PIL
+        if size is None and Image:  # fallback to PIL
             im = Image.open(filename)
             size = im.size
             try: