diff --git a/ANNOUNCE b/ANNOUNCE
index a1d37a0e9..7a197239e 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.7.0beta75 - December 19, 2015
+Libpng 1.7.0beta75 - December 21, 2015
 
 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.
@@ -1124,7 +1124,7 @@ Version 1.7.0beta74 [December 19, 2015]
   Added .travis.yml configuration file to control Travis continuous
     integration testing (David Drysdale).
 
-Version 1.7.0beta75 [December 19, 2015]
+Version 1.7.0beta75 [December 21, 2015]
   Fixed duplicate tIME chunk from png_write_png.
   Added an example program, pngcp.c, that illustrates the problem when
     used to copy pngtest.png (the result is an invalid PNG because the
@@ -1133,6 +1133,11 @@ Version 1.7.0beta75 [December 19, 2015]
   Added an accurate 'methodical' measure.
   Fixed incorrect references to 'pngimage' in pngcp.
   Fixed incorrect debug macro in release builds.
+  Reversed the order of tests in png_zlib_compress_validate(().
+    Undefined behaviour sanitizer currently fires for this test
+    with an error about member access within null pointer to
+    struct; put the check that relies on pz->list being non-NULL
+    second (David Drysdale).
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/CHANGES b/CHANGES
index c9a28acd7..9f15cf9b1 100644
--- a/CHANGES
+++ b/CHANGES
@@ -5423,7 +5423,7 @@ Version 1.7.0beta74 [December 19, 2015]
   Added .travis.yml configuration file to control Travis continuous
     integration testing (David Drysdale).
 
-Version 1.7.0beta75 [December 19, 2015]
+Version 1.7.0beta75 [December 21, 2015]
   Fixed duplicate tIME chunk from png_write_png.
   Added an example program, pngcp.c, that illustrates the problem when
     used to copy pngtest.png (the result is an invalid PNG because the
@@ -5432,6 +5432,11 @@ Version 1.7.0beta75 [December 19, 2015]
   Added an accurate 'methodical' measure.
   Fixed incorrect references to 'pngimage' in pngcp.
   Fixed incorrect debug macro in release builds.
+  Reversed the order of tests in png_zlib_compress_validate(().
+    Undefined behaviour sanitizer currently fires for this test
+    with an error about member access within null pointer to
+    struct; put the check that relies on pz->list being non-NULL
+    second (David Drysdale).
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit