diff --git a/src/prelaunch/genius.2.a b/src/prelaunch/genius.2.a
index 6b97eb194..d4f2b661e 100644
--- a/src/prelaunch/genius.2.a
+++ b/src/prelaunch/genius.2.a
@@ -32,6 +32,13 @@
          +LC_REBOOT
          +DISABLE_ACCEL
          inc   $9d        ; game relies on it
+         lda   #$52
+         sta   $cc        ; game relies on it
+         lda   #0
+         sta   $cb        ; game relies on it
+         sta   $ca        ; game relies on it
+         lda   #$80
+         sta   $c9        ; game relies on it
          jmp   $95E5
 
 callback1
diff --git a/src/prelaunch/genius.3.a b/src/prelaunch/genius.3.a
index de372990f..659ab3065 100644
--- a/src/prelaunch/genius.3.a
+++ b/src/prelaunch/genius.3.a
@@ -32,6 +32,13 @@
          +LC_REBOOT
          +DISABLE_ACCEL
          inc   $9d        ; game relies on it
+         lda   #$52
+         sta   $cc        ; game relies on it
+         lda   #0
+         sta   $cb        ; game relies on it
+         sta   $ca        ; game relies on it
+         lda   #$80
+         sta   $c9        ; game relies on it
          jmp   $95E5
 
 callback1
diff --git a/src/prelaunch/genius.a b/src/prelaunch/genius.a
index 27389ec3e..d3c337de6 100644
--- a/src/prelaunch/genius.a
+++ b/src/prelaunch/genius.a
@@ -32,6 +32,13 @@
          +LC_REBOOT
          +DISABLE_ACCEL
          inc   $9d        ; game relies on it
+         lda   #$52
+         sta   $cc        ; game relies on it
+         lda   #0
+         sta   $cb        ; game relies on it
+         sta   $ca        ; game relies on it
+         lda   #$80
+         sta   $c9        ; game relies on it
          jmp   $95E5
 
 callback1