diff --git a/devel/ftoption.h b/devel/ftoption.h
index b2363d74c..740b6b3b8 100644
--- a/devel/ftoption.h
+++ b/devel/ftoption.h
@@ -445,6 +445,8 @@ FT_BEGIN_HEADER
    *   trace log messages to a file instead of `stderr`.  For writing logs
    *   to a file, FreeType uses an the external `dlg` library (the source
    *   code is in `src/dlg`).
+   *
+   *   This option needs a C99 compiler.
    */
 #define FT_DEBUG_LOGGING
 
@@ -582,12 +584,12 @@ FT_BEGIN_HEADER
   /**************************************************************************
    *
    * Define `TT_CONFIG_OPTION_POSTSCRIPT_NAMES` if you want to be able to
-   * load and enumerate the glyph Postscript names in a TrueType or OpenType
+   * load and enumerate Postscript names of glyphs in a TrueType or OpenType
    * file.
    *
-   * Note that when you do not compile the 'psnames' module by undefining the
-   * above `FT_CONFIG_OPTION_POSTSCRIPT_NAMES`, the 'sfnt' module will
-   * contain additional code used to read the PS Names table from a font.
+   * Note that if you do not compile the 'psnames' module by undefining the
+   * above `FT_CONFIG_OPTION_POSTSCRIPT_NAMES` macro, the 'sfnt' module will
+   * contain additional code to read the PostScript name table from a font.
    *
    * (By default, the module uses 'psnames' to extract glyph names.)
    */