diff -Nru nxcomp-3.5.0-2/debian/changelog nxcomp-3.5.0-2/debian/changelog
--- nxcomp-3.5.0-2/debian/changelog	2013-01-15 10:53:45.000000000 +0000
+++ nxcomp-3.5.0-2/debian/changelog	2016-04-27 08:23:28.000000000 +0000
@@ -1,3 +1,15 @@
+nxcomp (3.5.0-2-0ubuntu3) yakkety; urgency=medium
+
+  * d/p/fix-png1.6.patch: fix source after libpng API changes.
+
+ -- Gianfranco Costamagna <locutusofborg@debian.org>  Wed, 27 Apr 2016 10:23:02 +0200
+
+nxcomp (3.5.0-2-0ubuntu2) yakkety; urgency=medium
+
+  * No-change rebuild for libpng soname change.
+
+ -- Matthias Klose <doko@ubuntu.com>  Sat, 23 Apr 2016 00:16:03 +0000
+
 nxcomp (3.5.0-2-0ubuntu1) raring; urgency=low
 
   * New upstream release.
diff -Nru nxcomp-3.5.0-2/debian/patches/fix-png1.6.patch nxcomp-3.5.0-2/debian/patches/fix-png1.6.patch
--- nxcomp-3.5.0-2/debian/patches/fix-png1.6.patch	1970-01-01 00:00:00.000000000 +0000
+++ nxcomp-3.5.0-2/debian/patches/fix-png1.6.patch	2016-04-27 08:23:00.000000000 +0000
@@ -0,0 +1,42 @@
+Description: Follow libpng1.6 API changes.
+Author: Gianfranco Costamagna <locutusofborg@debian.org>
+
+--- nxcomp-3.5.0-2.orig/Pgn.cpp
++++ nxcomp-3.5.0-2/Pgn.cpp
+@@ -412,9 +412,10 @@ int DecompressPng16(unsigned char *compr
+     return -1;
+   }
+ 
++  png_byte color_type = png_get_color_type(pngPtr, infoPtr);
+   png_read_info(pngPtr, infoPtr);
+ 
+-  if (infoPtr -> color_type == PNG_COLOR_TYPE_PALETTE)
++  if (color_type == PNG_COLOR_TYPE_PALETTE)
+   {
+     png_set_expand(pngPtr);
+   }
+@@ -563,9 +564,9 @@ int DecompressPng24(unsigned char *compr
+     return -1;
+   }
+ 
++  png_byte color_type = png_get_color_type(pngPtr, infoPtr);
+   png_read_info( pngPtr, infoPtr ) ;
+-
+-  if (infoPtr -> color_type == PNG_COLOR_TYPE_PALETTE)
++  if (color_type == PNG_COLOR_TYPE_PALETTE)
+   {
+     png_set_expand(pngPtr);
+   }
+@@ -706,10 +707,11 @@ int DecompressPng32(unsigned char *compr
+     return -1;
+   }
+ 
++  png_byte color_type = png_get_color_type(pngPtr, infoPtr);
+   png_read_info(pngPtr, infoPtr) ;
+ 
+ 
+-  if (infoPtr -> color_type == PNG_COLOR_TYPE_PALETTE)
++  if (color_type == PNG_COLOR_TYPE_PALETTE)
+   {
+     png_set_expand(pngPtr);
+   }
diff -Nru nxcomp-3.5.0-2/debian/patches/series nxcomp-3.5.0-2/debian/patches/series
--- nxcomp-3.5.0-2/debian/patches/series	2013-01-15 10:53:45.000000000 +0000
+++ nxcomp-3.5.0-2/debian/patches/series	2016-04-27 08:22:34.000000000 +0000
@@ -2,3 +2,4 @@
 0002-x2go-patchset-makefile.patch
 0003-x2go-patchset-xlib.patch
 0004-sa_restorer.patch
+fix-png1.6.patch