Fix header comment.
diff --git a/src/smooth/ftgrays.c b/src/smooth/ftgrays.c
index a1d6251..f6723af 100644
--- a/src/smooth/ftgrays.c
+++ b/src/smooth/ftgrays.c
@@ -32,8 +32,8 @@
/* cc -c -D_STANDALONE_ ftgrays.c */
/* */
/* The renderer can be initialized with a call to */
- /* `ft_gray_raster.gray_raster_new'; an anti-aliased bitmap can be */
- /* generated with a call to `ft_gray_raster.gray_raster_render'. */
+ /* `ft_gray_raster.raster_new'; an anti-aliased bitmap can be generated */
+ /* with a call to `ft_gray_raster.raster_render'. */
/* */
/* See the comments and documentation in the file `ftimage.h' for more */
/* details on how the raster works. */
