From ea284e48b491b3bb66d4da5590887d9e6889f10f Mon Sep 17 00:00:00 2001
From: cristy <urban-warrior@git.imagemagick.org>
Date: Mon, 3 Feb 2014 10:41:54 +0000
Subject: [PATCH]

---
 MagickCore/compare.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MagickCore/compare.c b/MagickCore/compare.c
index cb8c2912f..2e40a474a 100644
--- a/MagickCore/compare.c
+++ b/MagickCore/compare.c
@@ -1845,7 +1845,7 @@ MagickExport Image *SimilarityImage(Image *image,const Image *reference,
             ((similarity_traits & UpdatePixelTrait) == 0))
           continue;
         SetPixelChannel(similarity_image,channel,ClampToQuantum(QuantumRange-
-          QuantumRange*similarity),q);
+          QuantumRange*MagickMax(similarity,1.0)),q);
       }
       q+=GetPixelChannels(similarity_image);
     }
-- 
2.50.1