diff --git a/MagickCore/image.h b/MagickCore/image.h
index ae2765c..e17b44d 100644
--- a/MagickCore/image.h
+++ b/MagickCore/image.h
@@ -53,15 +53,15 @@
UndefinedType,
BilevelType,
GrayscaleType,
- GrayscaleMatteType,
+ GrayscaleAlphaType,
PaletteType,
- PaletteMatteType,
+ PaletteAlphaType,
TrueColorType,
- TrueColorMatteType,
+ TrueColorAlphaType,
ColorSeparationType,
- ColorSeparationMatteType,
+ ColorSeparationAlphaType,
OptimizeType,
- PaletteBilevelMatteType
+ PaletteBilevelAlphaType
} ImageType;
typedef enum