diff --git a/userlib/sys.s b/userlib/sys.s
index 7b7e3da..fc3d526 100644
--- a/userlib/sys.s
+++ b/userlib/sys.s
@@ -1,5 +1,5 @@
 /* Start.s 
- *	Assembly language assist for user programs running on top of Nachos.
+ *	Assembly language assist for user programs running on top of BurritOS.
  *
  *	Since we don't want to pull in the entire C library, we define
  *	what we need for a user program here, namely Start and the system