From 11c6a9f86a6574a0a38cf26b9b0fa2c61a38e308 Mon Sep 17 00:00:00 2001
From: Steven Silvester <steven.silvester@ieee.org>
Date: Wed, 24 Dec 2014 17:12:00 -0600
Subject: [PATCH] Fix another viewer import

---
 skimage/viewer/utils/core.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/skimage/viewer/utils/core.py b/skimage/viewer/utils/core.py
index 4f8bfade..517370e1 100644
--- a/skimage/viewer/utils/core.py
+++ b/skimage/viewer/utils/core.py
@@ -14,8 +14,8 @@ if has_qt:
         warnings.warn("Recommended matplotlib backend is `Agg` for full "
               "skimage.viewer functionality.")
 else:
-    FigureManagerQT = None
-    FigureCanvasQTAgg = None
+    FigureManagerQT = object
+    FigureCanvasQTAgg = object
 
 
 __all__ = ['init_qtapp', 'start_qtapp', 'RequiredAttr', 'figimage',