(no commit message)

diff --git a/magick/quantize.c b/magick/quantize.c
index f12004a51dd8cbcb85c228d346ff7a2c2d98a3af..cdb92e33495b9a9a173e3113a2f9964048f077a4 100644 (file)
--- a/magick/quantize.c
+++ b/magick/quantize.c
@@ -2205,7 +2205,7 @@ MagickExport MagickBooleanType PosterizeImageChannel(Image *image,
 {
 #define PosterizeImageTag  "Posterize/Image"
 #define PosterizePixel(pixel) (Quantum) (QuantumRange*(MagickRound( \
-  QuantumScale*pixel*(levels-1))/(levels-1)))
+  QuantumScale*pixel*(levels-1))/MagickMax(levels-1,1)))
 
   CacheView
     *image_view;