diff --git a/package/x11r7/xlib_libSM/xlib_libSM.hash b/package/x11r7/xlib_libSM/xlib_libSM.hash
new file mode 100644
index 0000000000..79dc25c226
--- /dev/null
+++ b/package/x11r7/xlib_libSM/xlib_libSM.hash
@@ -0,0 +1,2 @@
+# From http://lists.freedesktop.org/archives/xorg/2013-September/056013.html
+sha256	0baca8c9f5d934450a70896c4ad38d06475521255ca63b717a6510fdb6e287bd	libSM-1.2.2.tar.bz2