diff --git a/Makefile.am b/Makefile.am
index 1496b6343..080ce9cc3 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 \
-	%HEADERS%
+	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
 
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS = @LIBPNG_DEFINES@
 
diff --git a/Makefile.in b/Makefile.in
index 4c14e1ec7..147d38231 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -303,7 +303,7 @@ 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 \
-	%HEADERS%
+	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
 
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS = @LIBPNG_DEFINES@
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS = -no-undefined \