diff --git a/_Make_SYS.txt b/_Make_SYS.txt
index 7d8a9707..38e1825e 100644
--- a/_Make_SYS.txt
+++ b/_Make_SYS.txt
@@ -1,9 +1,8 @@
 PR#3
-PREFIX /A2OSX.SRC
+PREFIX /A2OSX.BOOT
 NEW
 INC 1
 AUTO 6
-PREFIX /A2OSX.BOOT
 BLOAD A
 BSAVE A2OSX.SYSTEM,TSYS,A$2000,L$1300
 -A2OSX.SYSTEM