diff --git a/src/font.h b/src/font.h
index d083ae8f842..5564d73b712 100644
--- a/src/font.h
+++ b/src/font.h
@@ -659,7 +659,7 @@ struct font_driver
 
   /* Optional.
      Draw glyphs between FROM and TO of S->char2b at (X Y) pixel
-     position of frame S->F with S->FACE and S->GC.  If WITH_BACKGROUND,
+     position of frame S->f with S->face and S->gc.  If WITH_BACKGROUND,
      fill the background in advance.  It is assured that WITH_BACKGROUND
      is false when (FROM > 0 || TO < S->nchars).  */
   int (*draw) (struct glyph_string *s, int from, int to,