diff --git a/src/prelaunch/boulder.dash.a b/src/prelaunch/boulder.dash.a
index 916d9a257..0a8072177 100644
--- a/src/prelaunch/boulder.dash.a
+++ b/src/prelaunch/boulder.dash.a
@@ -9,8 +9,8 @@
 
          +ENABLE_ACCEL
          lda   #$60
-         sta   $71FA
-         jsr   $3FC0      ; decompress
+         sta   $404A
+         jsr   $4000      ; decompress
 
          +GET_MACHINE_STATUS
          and   #CHEATS_ENABLED
@@ -19,7 +19,7 @@
          sta   $181A      ; patch - don't decrease lives
 +
          +DISABLE_ACCEL
-         jmp   $14DD
+         jmp   $800
 
 !if * > $1C0 {
   !error "code is too large, ends at ", *