(no commit message)

diff --git a/MagickCore/histogram.c b/MagickCore/histogram.c
index b3d8a2734e1990a6e816f00fef894e351a29ddcc..e3de5e2e8e5acfd725401850d26654471fabfc12 100644 (file)
--- a/MagickCore/histogram.c
+++ b/MagickCore/histogram.c
@@ -670,7 +670,8 @@ MagickExport MagickBooleanType IsHistogramImage(const Image *image,
   assert(image->signature == MagickCoreSignature);
   if (image->debug != MagickFalse)
     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
-  if ((image->storage_class == PseudoClass) && (image->colors <= 256))
+  if ((image->storage_class == PseudoClass) &&
+      (image->colors <= MaximumUniqueColors))
     return(MagickTrue);
   if (image->storage_class == PseudoClass)
     return(MagickFalse);