diff --git a/src/ints/Makefile.am b/src/ints/Makefile.am
index f5a095ec..3a677e22 100644
--- a/src/ints/Makefile.am
+++ b/src/ints/Makefile.am
@@ -1,6 +1,7 @@
 AM_CPPFLAGS = -I$(top_srcdir)/include
 
 noinst_LIBRARIES = libints.a
+EXTRA_DIST = xms.h 
 libints_a_SOURCES = mouse.cpp xms.cpp ems.cpp \
                     int10.cpp int10.h int10_char.cpp int10_memory.cpp int10_misc.cpp int10_modes.cpp int10_pal.cpp int10_put_pixel.cpp \
 		    bios.cpp bios_disk.cpp bios_keyboard.cpp