...
diff --git a/MagickCore/effect.c b/MagickCore/effect.c
index adfd151..3d93665 100644
--- a/MagickCore/effect.c
+++ b/MagickCore/effect.c
@@ -988,8 +988,8 @@
         pixel;
 
       register const Quantum
-        *magick_restrict r,
-        *magick_restrict p;
+        *magick_restrict p,
+        *magick_restrict r;
 
       register ssize_t
         i,