diff --git a/skimage/morphology/convex_hull.py b/skimage/morphology/convex_hull.py
index b904ece7..5c2ed8a2 100644
--- a/skimage/morphology/convex_hull.py
+++ b/skimage/morphology/convex_hull.py
@@ -104,3 +104,4 @@ def convex_hull_object(image):
         convex_img = np.logical_or(convex_img, convex_obj)
 
     return convex_img
+