diff --git a/magick/statistic.h b/magick/statistic.h
index 8ce3f47..b437e7a 100644
--- a/magick/statistic.h
+++ b/magick/statistic.h
@@ -55,17 +55,7 @@
ExceptionInfo *),
GetImageRange(const Image *,double *,double *,ExceptionInfo *),
GetImageMean(const Image *,double *,double *,ExceptionInfo *),
- GetImageKurtosis(const Image *,double *,double *,ExceptionInfo *),
- SetImageChannelDepth(Image *,const ChannelType,const unsigned long),
- SetImageDepth(Image *,const unsigned long);
-
-extern MagickExport RectangleInfo
- GetImageBoundingBox(const Image *,ExceptionInfo *exception);
-
-extern MagickExport unsigned long
- GetImageChannelDepth(const Image *,const ChannelType,ExceptionInfo *),
- GetImageDepth(const Image *,ExceptionInfo *),
- GetImageQuantumDepth(const Image *,const MagickBooleanType);
+ GetImageKurtosis(const Image *,double *,double *,ExceptionInfo *);
#if defined(__cplusplus) || defined(c_plusplus)
}