diff --git a/res/ports/advance-to-boardwalk/src/advance.a b/res/ports/advance-to-boardwalk/src/advance.a
index 57dd19b..19f3c99 100644
--- a/res/ports/advance-to-boardwalk/src/advance.a
+++ b/res/ports/advance-to-boardwalk/src/advance.a
@@ -6,11 +6,10 @@
          !src  "../common/src/macros.a"
 
          +INIT_MACHINE
-         jsr   decrunch
-
-!if * != $211F {
-  !serious "Adjust prelaunch to patch JMP at ", *
+!if * != $211C {
+  !serious "Adjust prelaunch to patch JSR at ", *, " to JMP"
 }
+         jsr   decrunch
          jmp   $4000
 
 get_crunched_byte
diff --git a/src/prelaunch/advance.a b/src/prelaunch/advance.a
index 2fa4ec2..4b55816 100644
--- a/src/prelaunch/advance.a
+++ b/src/prelaunch/advance.a
@@ -8,11 +8,13 @@
 
          +ENABLE_ACCEL
          lda   #$4C
-         sta   $211F
+         sta   $211C
          jsr   $2100
          +DISABLE_ACCEL
          +RESET_VECTOR $100
-         jmp   $2122
+         ldx   #$FD
+         txs
+         jmp   $211F
 
 !if * > $1C0 {
   !error "code is too large, ends at ", *