diff --git a/MagickCore/feature.c b/MagickCore/feature.c
index 905fedc..6b8fede 100644
--- a/MagickCore/feature.c
+++ b/MagickCore/feature.c
@@ -413,7 +413,7 @@
     if (status == MagickFalse)
       continue;
     p=GetCacheViewVirtualPixels(image_view,-(ssize_t) distance,y,image->columns+
-      2*distance,distance+1,exception);
+      2*distance,distance+2,exception);
     if (p == (const Quantum *) NULL)
       {
         status=MagickFalse;