diff --git a/MagickCore/effect.c b/MagickCore/effect.c
index 640f196..70afa6a 100644
--- a/MagickCore/effect.c
+++ b/MagickCore/effect.c
@@ -1394,7 +1394,7 @@
         k=normal_kernel;
         kernel_pixels=p;
         pixel=image->bias;
-        if ((GetPixelAlphaTraits(image) == UndefinedTrait) ||
+        if ((GetPixelAlphaTraits(image) == UndefinedPixelTrait) ||
             (image->matte == MagickFalse))
           {
             /*