--- openbox-2.3.1/util/epist/keytree.cc.orig	2003-06-29 08:08:59.000000000 -0600
+++ openbox-2.3.1/util/epist/keytree.cc	2003-06-29 08:09:21.000000000 -0600
@@ -30,6 +30,7 @@
 
 #include <string>
 #include <iostream>
+#include <assert.h>
 
 using std::string;