From f1367665cd3e1a615a9ae186cda2a2b9d7c64090 Mon Sep 17 00:00:00 2001
From: cristy <urban-warrior@git.imagemagick.org>
Date: Wed, 1 Feb 2012 02:47:16 +0000
Subject: [PATCH]

---
 MagickCore/enhance.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/MagickCore/enhance.c b/MagickCore/enhance.c
index d163de0cd..c62b3f01b 100644
--- a/MagickCore/enhance.c
+++ b/MagickCore/enhance.c
@@ -3182,8 +3182,7 @@ MagickExport MagickBooleanType NegateImage(Image *image,
 
         channel=GetPixelChannelMapChannel(image,i);
         traits=GetPixelChannelMapTraits(image,channel);
-        if (((traits & CopyPixelTrait) != 0) ||
-            (GetPixelMask(image,q) != 0))
+        if (((traits & UpdatePixelTrait) == 0) || (GetPixelMask(image,q) != 0))
           continue;
         q[i]=QuantumRange-q[i];
       }
-- 
2.40.0