--- synfig-0.64.0.orig/configure.ac	2013-05-09 18:32:41.000000000 +0200
+++ synfig-0.64.0/configure.ac	2013-09-20 15:35:06.273090631 +0200
@@ -452,12 +452,13 @@
 TARGET_PNG="yes"
 TARGET_MNG="yes"
 
-AC_CHECK_LIB(png14, png_write_row,[
-	PNG_LIBS="-lpng14"
-	AC_DEFINE(HAVE_LIBPNG14,[], [ Define if PNG 1.4 library is available ])
+AC_CHECK_LIB(png16, png_write_row,[
+	PNG_LIBS="-lpng16"
+	AC_DEFINE(HAVE_LIBPNG16,[], [ Define if PNG 1.6 library is available ])
 	AC_DEFINE(HAVE_LIBPNG,[], [ Define if PNG library is available ])
 	AC_SUBST(PNG_LIBS)
-	AM_CONDITIONAL(HAVE_LIBPNG14,true)
+	AM_CONDITIONAL(HAVE_LIBPNG16,true)
+	AM_CONDITIONAL(HAVE_LIBPNG14,false)
 	AM_CONDITIONAL(HAVE_LIBPNG,true)
 ],[
 	AC_CHECK_LIB(png12, png_write_row,[