diff --git a/ANNOUNCE b/ANNOUNCE
index 19cc36885..e7603dbd0 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,4 +1,4 @@
-Libpng 1.6.22beta05 - April 18, 2016
+Libpng 1.6.22beta05 - April 19, 2016
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -83,11 +83,13 @@ Version 1.6.22beta04 [April 5, 2016]
     memcpy-free implementations of load3() / store3().
     call load3() only when needed at the end of a scanline.
 
-Version 1.6.22beta05 [April 18, 2016]
+Version 1.6.22beta05 [April 19, 2016]
   Added PNG_FAST_FILTERS macro (defined as
     PNG_FILTER_NONE|PNG_FILTER_SUB|PNG_FILTER_UP).
   Various fixes for contrib/libtests/timepng.c
   Moved INTEL-SSE code from pngpriv.h into contrib/intel/intel_sse.patch.
+  Fixed typo (missing underscore) in #define PNG_READ_16_TO_8_SUPPORTED
+    (Bug report by Y.Ohashik).
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/CHANGES b/CHANGES
index d29e39c5b..a3fd9c3fb 100644
--- a/CHANGES
+++ b/CHANGES
@@ -5543,11 +5543,13 @@ Version 1.6.22beta04 [April 5, 2016]
     memcpy-free implementations of load3() / store3().
     call load3() only when needed at the end of a scanline.
 
-Version 1.6.22beta05 [April 18, 2016]
+Version 1.6.22beta05 [April 19, 2016]
   Added PNG_FAST_FILTERS macro (defined as
     PNG_FILTER_NONE|PNG_FILTER_SUB|PNG_FILTER_UP).
   Various fixes for contrib/libtests/timepng.c
   Moved INTEL-SSE code from pngpriv.h into contrib/intel/intel_sse.patch.
+  Fixed typo (missing underscore) in #define PNG_READ_16_TO_8_SUPPORTED
+    (Bug report by Y.Ohashik).
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/png.h b/png.h
index 8935392f7..23df0db5b 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.6.22beta05, April 11, 2016
+ * libpng version 1.6.22beta05, April 19, 2016
  *
  * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -12,7 +12,7 @@
  * Authors and maintainers:
  *   libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
  *   libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
- *   libpng versions 0.97, January 1998, through 1.6.22beta05, April 11, 2016:
+ *   libpng versions 0.97, January 1998, through 1.6.22beta05, April 19, 2016:
  *     Glenn Randers-Pehrson.
  *   See also "Contributing Authors", below.
  */
@@ -29,7 +29,7 @@
  * files that are distributed with libpng have other copyright owners and
  * are released under other open source licenses.
  *
- * libpng versions 1.0.7, July 1, 2000 through 1.6.22beta05, April 11, 2016 are
+ * libpng versions 1.0.7, July 1, 2000 through 1.6.22beta05, April 19, 2016 are
  * Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are
  * derived from libpng-1.0.6, and are distributed according to the same
  * disclaimer and license as libpng-1.0.6 with the following individuals
@@ -245,7 +245,7 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    April 11, 2016
+ *    April 19, 2016
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
@@ -315,7 +315,7 @@
 /* Version information for png.h - this should match the version in png.c */
 #define PNG_LIBPNG_VER_STRING "1.6.22beta05"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.6.22beta05 - April 11, 2016\n"
+     " libpng version 1.6.22beta05 - April 19, 2016\n"
 
 #define PNG_LIBPNG_VER_SONUM   16
 #define PNG_LIBPNG_VER_DLLNUM  16
@@ -1351,7 +1351,7 @@ PNG_EXPORT(229, void, png_set_scale_16, (png_structrp png_ptr));
 #endif
 
 #ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
-#define PNG_READ_16_TO_8 SUPPORTED /* Name prior to 1.5.4 */
+#define PNG_READ_16_TO_8_SUPPORTED /* Name prior to 1.5.4 */
 /* Strip the second byte of information from a 16-bit depth file. */
 PNG_EXPORT(48, void, png_set_strip_16, (png_structrp png_ptr));
 #endif