diff --git a/ChangeLog b/ChangeLog
index c69772955..3b2620509 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,25 @@
+2017-09-08  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>
+
+	[sfnt, truetype] Register the tags for marginal fonts.
+
+	The first 32bit of standard TrueType variants is 0x00010000,
+	`OTTO', `ttcf', `true' or `typ1'.  2 marginal dfonts on legacy Mac
+	OS X, Keyboard.dfont and LastResort.dfont, have the sfnt resources
+	starting 0xA5 followed by `kbd' or `lst'.  Considering the following
+	data could be parsed as conventional TrueType fonts, the header
+	checking is updated to allow these tags.  It seems that recent Mac
+	OS X has already switched to normal TTF for these fonts.
+
+	See the discussion at
+	http://u88.n24.queensu.ca/exiftool/forum/index.php?topic=3931.0
+
+	* include/freetype/tttags.h (TTAG_0xA5kbd, TTAG_0xA5lst): New header
+	tags for Keyboard.dfont and LastResort.dfont.
+	* src/sfnt/sfobjs.c (sfnt_open_font): Accept the sfnt resource
+	starts with TTAG_0xA5kbd or TTAG_0xA5lst.
+	* src/truetype/ttobjs.c (tt_face_init): Accept the face with the
+	format tag is TTAG_0xA5kbd or TTAG_0xA5lst.
+
 2017-09-05  Werner Lemberg  <wl@gnu.org>
 
 	Fix multiple calls of `FT_Bitmap_Convert'.