Index: uspace/srv/devman/devman.c
===================================================================
--- uspace/srv/devman/devman.c	(revision d6c953e97e64bd1eed580617eb3f025e3650fe37)
+++ uspace/srv/devman/devman.c	(revision f98bec0fb36e6e57e1528afe8951563181f0dbb7)
@@ -1066,4 +1066,7 @@
 	
 	link = hash_table_find(&tree->devman_devices, &key);
+	if (link == NULL)
+		return NULL;
+	
 	return hash_table_get_instance(link, dev_node_t, devman_dev);
 }