diff --git a/split_screen/credits.s b/split_screen/credits.s
index ca3c34c8..b78e61f0 100644
--- a/split_screen/credits.s
+++ b/split_screen/credits.s
@@ -28,6 +28,14 @@
 	; setup mockingboard
 
 	jsr mockingboard_detect_slot4
+	stx	MB_DETECTED
+	ldx	MB_DETECTED
+	beq	no_init_mb
+
+	jsr	mockingboard_init
+
+no_init_mb:
+
 
 	;==========================
 	; setup text screen
@@ -126,6 +134,7 @@
 	; to avoid false positive found if the horiz blanking is mirroring
 	; the line (max 3 repeats in that case)
 
+
 vapor_lock_loop:
 	LDA #$A0
 zxloop:
@@ -165,6 +174,9 @@ loopB:
 	dey								; 2
 	bne	loopA							; 2nt/3
 
+	jmp	display_loop
+.align	$100
+
 	;=====================================================
 	;=====================================================
 	; Loop forever display loop