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diff --git a/MagickCore/accelerate.c b/MagickCore/accelerate.c
index 4e8a8c93a0ba06ed6aca2061ed995f1b2943a6bc..8e1f50f06180bdb9d9488b9fa4276497e0ba15f5 100644 (file)
--- a/MagickCore/accelerate.c
+++ b/MagickCore/accelerate.c
@@ -633,6 +633,8 @@ MagickExport MagickBooleanType AccelerateConvolveImage(const Image *image,
   if ((GetImageVirtualPixelMethod(image) != UndefinedVirtualPixelMethod) &&
       (GetImageVirtualPixelMethod(image) != EdgeVirtualPixelMethod))
     return(MagickFalse);
+  if (GetPixelChannels(image) != 4)
+    return(MagickFalse);
 #if !defined(MAGICKCORE_OPENCL_SUPPORT)
   return(MagickFalse);
 #else