From f5118eb46ae6d198ad42334fa87548664224fdd4 Mon Sep 17 00:00:00 2001
From: cristy <urban-warrior@git.imagemagick.org>
Date: Wed, 11 Jul 2012 23:36:39 +0000
Subject: [PATCH]

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

diff --git a/MagickCore/threshold.c b/MagickCore/threshold.c
index 33c394e4c..364f0f35c 100644
--- a/MagickCore/threshold.c
+++ b/MagickCore/threshold.c
@@ -437,7 +437,7 @@ MagickExport MagickBooleanType BilevelImage(Image *image,const double threshold,
         traits=GetPixelChannelMapTraits(image,channel);
         if ((traits & UpdatePixelTrait) == 0)
           continue;
-        if ((image->channel_mask & SyncChannels) == 0)
+        if (image->channel_mask == DefaultChannels)
           pixel=q[i];
         q[i]=(Quantum) (pixel <= threshold ? 0 : QuantumRange);
       }
-- 
2.40.0