diff --git a/DISPLAY.S b/DISPLAY.S
index a6cd90f..a5945a2 100644
--- a/DISPLAY.S
+++ b/DISPLAY.S
@@ -96,6 +96,7 @@ GSTEST    SEC
           STA $C034      ; BORDURE NOIRE
 
 GO1       LDA SOURCE+$0A
+          CLC
           ADC OFFSET+1
           STA OFFSET+1