(no commit message)

diff --git a/MagickCore/pixel.c b/MagickCore/pixel.c
index 554657ebbafff5c6d0359ea838379188543d5e95..30dd45240b4d2115c119cd7ded5f43da763c3c55 100644 (file)
--- a/MagickCore/pixel.c
+++ b/MagickCore/pixel.c
@@ -4934,7 +4934,7 @@ MagickExport void SetPixelChannelMap(Image *image,const ChannelType mask)
   register ssize_t
     i;
 
-  image->sync=MagickFalse;
+  image->sync=mask == DefaultChannels ? MagickTrue : MagickFalse;
   for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
     SetPixelChannelMapTraits(image,(PixelChannel) i,GetChannelBit(mask,i) ?
       UpdatePixelTrait : CopyPixelTrait);