diff --git a/ANNOUNCE b/ANNOUNCE
index fd912bf80ca8d139867c4913f286a71d9fd9efbb..d68c6e5907a05dfdd2940abde4e0e8a8d65ffd9d 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -37,6 +37,8 @@ Version 1.6.19beta01 [July 29, 2015]
   Suppressed some warnings from the Borland C++ 5.5.1/5.82 compiler
     (Bug report by Viktor Szaka'ts).  Several warnings remain and are
     unavoidable, where we test for overflow.
+  Fixed potential leak of png_pixels in contrib/pngminus/pnm2png.c
+  Fixed uninitialized variable in contrib/gregbook/rpng2-x.c
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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diff --git a/CHANGES b/CHANGES
index 733a7c835acb66636f567bba5f8f846b16ef3c28..43a8531dc1ef78c2f2df097817e9001010352f42 100644
--- a/CHANGES
+++ b/CHANGES
@@ -5316,6 +5316,8 @@ Version 1.6.19beta01 [July 29, 2015]
   Suppressed some warnings from the Borland C++ 5.5.1/5.82 compiler
     (Bug report by Viktor Szaka'ts).  Several warnings remain and are
     unavoidable, where we test for overflow.
+  Fixed potential leak of png_pixels in contrib/pngminus/pnm2png.c
+  Fixed uninitialized variable in contrib/gregbook/rpng2-x.c
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/contrib/gregbook/rpng2-x.c b/contrib/gregbook/rpng2-x.c
index cf371014c8d379687463f3bee1105d36f5671499..eea95fbd41e8ba0fcd5d22afa877933453ee8b91 100644
--- a/contrib/gregbook/rpng2-x.c
+++ b/contrib/gregbook/rpng2-x.c
@@ -43,12 +43,10 @@
     - 2.03:  deleted runtime MMX-enabling/disabling and obsolete -mmx* options
     - 2.04:  Added "void(foo);" statements to quiet pedantic compiler warnings
              about unused variables (GR-P)
-
-  TO DO:
-             use nanosleep() instead of usleep(), which is obsolete/deprecated.
+    - 2.05:  Use nanosleep() instead of usleep(), which is deprecated (GR-P).
   ---------------------------------------------------------------------------
 
-      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2010, 2014-2015 Greg Roelofs.  All rights reserved.
 
       This software is provided "as is," without warranty of any kind,
       express or implied.  In no event shall the author or contributors
@@ -119,6 +117,7 @@
 # undef usleep
 # define usleep(usec) {        \
    struct timespec ts;         \
+   ts.tv_sec = 0;              \
    ts.tv_nsec = (usec) * 1000; \
    nanosleep(&ts, NULL); }
 #  endif