From: cristy <urban-warrior@git.imagemagick.org>
Date: Sun, 8 Jan 2012 02:44:36 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: 7.0.1-0~6429
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=942cf44994389fdeb19e16eebec187eb41d919d4;p=imagemagick

---

diff --git a/MagickCore/attribute.c b/MagickCore/attribute.c
index 7bb7d99d1..0fc9cd871 100644
--- a/MagickCore/attribute.c
+++ b/MagickCore/attribute.c
@@ -867,7 +867,8 @@ MagickExport MagickBooleanType SetImageDepth(Image *image,
         traits=GetPixelChannelMapTraits(image,channel);
         if (traits == UndefinedPixelTrait)
           continue;
-        q[i]=ScaleAnyToQuantum(ScaleQuantumToAny(q[i],range),range);
+        if (channel != IndexPixelChannel)
+          q[i]=ScaleAnyToQuantum(ScaleQuantumToAny(q[i],range),range);
       }
       q+=GetPixelChannels(image);
     }