diff -r 4e261a14a6bd -r 3d3fab314c4e librazor/razor.c
--- a/librazor/razor.c	Thu Aug 13 07:14:51 2009 +0100
+++ b/librazor/razor.c	Mon Sep 28 17:37:12 2009 +0100
@@ -598,9 +598,11 @@
 	int len;
 
 	assert (set != NULL);
-	assert (dir != NULL);
 	assert (pattern != NULL);
 
+	if (dir == NULL)
+		return NULL;
+
 	e = dir;
 	do {
 		n = pool + e->name;