diff --git a/include/freetype/freetype.h b/include/freetype/freetype.h
index 2c1735977..85ea42df1 100644
--- a/include/freetype/freetype.h
+++ b/include/freetype/freetype.h
@@ -1477,7 +1477,7 @@ FT_BEGIN_HEADER
   /*                         Only relevant for outline glyphs.             */
   /*                                                                       */
   /*    advance           :: This is the transformed advance width for the */
-  /*                         glyph.                                        */
+  /*                         glyph (in 26.6 fractional pixel format).      */
   /*                                                                       */
   /*    format            :: This field indicates the format of the image  */
   /*                         contained in the glyph slot.  Typically       */
diff --git a/include/freetype/ftglyph.h b/include/freetype/ftglyph.h
index fdf410e92..cacccf025 100644
--- a/include/freetype/ftglyph.h
+++ b/include/freetype/ftglyph.h
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    FreeType convenience functions to handle glyphs (specification).     */
 /*                                                                         */
-/*  Copyright 1996-2001, 2002, 2003, 2006, 2008 by                         */
+/*  Copyright 1996-2001, 2002, 2003, 2006, 2008, 2009 by                   */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -194,7 +194,7 @@ FT_BEGIN_HEADER
   /*    outline :: A descriptor for the outline.                           */
   /*                                                                       */
   /* <Note>                                                                */
-  /*    You can typecast a @FT_Glyph to @FT_OutlineGlyph if you have       */
+  /*    You can typecast an @FT_Glyph to @FT_OutlineGlyph if you have      */
   /*    `glyph->format == FT_GLYPH_FORMAT_OUTLINE'.  This lets you access  */
   /*    the outline's content easily.                                      */
   /*                                                                       */