diff --git a/eater_iscntc.s b/eater_iscntc.s
index 73f7dfc..462740a 100644
--- a/eater_iscntc.s
+++ b/eater_iscntc.s
@@ -1,9 +1,8 @@
 ISCNTC:
         jsr MONRDKEY
         bcc not_cntc
-        cmp #3
-        bne not_cntc
-        jmp is_cntc
+        cmp #$03
+        beq is_cntc
 
 not_cntc:
         rts