diff --git a/src/a2.asm b/src/a2.asm
index 16e80e1..371e6bc 100644
--- a/src/a2.asm
+++ b/src/a2.asm
@@ -38,9 +38,9 @@ WDH:	in ax, INPUT
 
 
 	mov ax, res
-	mov cl, 4
-	shr ax, cl;shift right 4 times
-	and ax, 00001111b;might not be needed
+	mov cl, 0x4
+	sar ax, cl;shift right 4 times
+	;and ax, 00001111b;
 	out LED, ax;debug, output to leds
 	push ax;write result to stack