diff -up gnome-launch-box-0.4/configure.ac.libs gnome-launch-box-0.4/configure.ac
--- gnome-launch-box-0.4/configure.ac.libs	2010-02-14 14:37:42.012905131 -0500
+++ gnome-launch-box-0.4/configure.ac	2010-02-14 14:37:28.026904235 -0500
@@ -52,6 +52,7 @@ PKG_CHECK_MODULES(LB,[
 	gnome-desktop-2.0 >= 2.10
 	libebook-1.2 >= 1.8
 	gconf-2.0
+        x11
 ])
 
 AC_MSG_CHECKING([whether the GNOME control-center uses custom keybindings])