diff --git a/MagickCore/threshold.c b/MagickCore/threshold.c
index 535559c..a1420e9 100644
--- a/MagickCore/threshold.c
+++ b/MagickCore/threshold.c
@@ -567,12 +567,12 @@
       ssize_t
         n;
 
-      n=0;
       if (GetPixelMask(image,q) != 0)
         {
           q+=GetPixelChannels(image);
           continue;
         }
+      n=0;
       for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
       {
         PixelChannel