diff --git a/package/x11r7/xlib_libXdmcp/xlib_libXdmcp.hash b/package/x11r7/xlib_libXdmcp/xlib_libXdmcp.hash
new file mode 100644
index 0000000000..8aff93b540
--- /dev/null
+++ b/package/x11r7/xlib_libXdmcp/xlib_libXdmcp.hash
@@ -0,0 +1,2 @@
+# From http://lists.freedesktop.org/archives/xorg/2012-March/054007.html
+sha256	9ace6d4230f9dce4ed090692f82f613253ada8f887b23b3d8ff3dd4e3a7c118e	libXdmcp-1.1.1.tar.bz2