diff --git a/Magick++/lib/STL.cpp b/Magick++/lib/STL.cpp
index 912a9f4..fdeee8a 100644
--- a/Magick++/lib/STL.cpp
+++ b/Magick++/lib/STL.cpp
@@ -679,11 +679,11 @@
// Filter image by replacing each pixel component with the median
// color in a circular neighborhood
-Magick::medianFilterImage::medianFilterImage( const double radius_ )
+Magick::medianConvolveImage::medianConvolveImage( const double radius_ )
: _radius( radius_ )
{
}
-void Magick::medianFilterImage::operator()( Magick::Image &image_ ) const
+void Magick::medianConvolveImage::operator()( Magick::Image &image_ ) const
{
image_.medianFilter( _radius );
}