diff --git a/Makefile.am b/Makefile.am
index 8711c4fad..0c4a5310d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -29,7 +29,7 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngset.c pngget.c pngrutil
 	pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c \
-	png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
 
 nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = pnglibconf.h
 
@@ -64,7 +64,6 @@ EXTRA_DIST= \
 	pngtest.png pngbar.png pngnow.png pngbar.jpg autogen.sh \
 	${srcdir}/projects/visualc6/* \
 	${srcdir}/projects/visualc71/* \
-	${srcdir}/projects/xcode/* \
 	${srcdir}/scripts/* \
 	${srcdir}/contrib/gregbook/* \
 	${srcdir}/contrib/pngminim/* \
diff --git a/Makefile.in b/Makefile.in
index c6f741ac4..a3f9a6d5f 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -320,7 +320,7 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngset.c pngget.c pngrutil
 	pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c \
-	png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
 
 nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = pnglibconf.h
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS = @LIBPNG_DEFINES@
diff --git a/scripts/pngwin.def b/scripts/pngwin.def
index 62519fa91..ef95d984a 100644
--- a/scripts/pngwin.def
+++ b/scripts/pngwin.def
@@ -60,6 +60,7 @@ EXPORTS
  png_set_invert_mono @46
  png_set_background @47
  png_set_strip_16 @48
+ png_set_quantize @49
  png_set_gamma @50
  png_set_flush @51
  png_write_flush @52