Index: uspace/srv/devman/devman.c
===================================================================
--- uspace/srv/devman/devman.c	(revision 655cc5691eeb1c388aaa91c7d03af8a7271af70e)
+++ uspace/srv/devman/devman.c	(revision f51b1d33aaf46c98cee9c0ec13e8521a70b8616d)
@@ -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);
 }