diff --git a/qrcode.bas b/qrcode.bas
index db8ee96..d04dfff 100644
--- a/qrcode.bas
+++ b/qrcode.bas
@@ -3,9 +3,9 @@
 30 HTAB 4: VTAB 14: PRINT "[A] FOR ALPHANUMERIC.": HTAB 4: PRINT "UP TO 114 CHARACTERS. LIMITED": HTAB 4: PRINT "TO UPPER CASE LETTERS, NUMBERS,": HTAB 4: PRINT "$ % * + - . / : AND SPACES."
 40 HTAB 4: VTAB 19: PRINT "[B] FOR BYTES.": HTAB 4: PRINT "LIMITED TO 78 ASCII CHARACTERS."
 50 VTAB 22: INPUT "ENTER A OR B :";M$
-60 IF NOT (M$ = "A" OR M$ = "B" OR M$="A" OR M$="B") THEN GOTO 50
-70 IF (M$ = "B" OR M$="b") THEN M$ = "B": POKE 8,64: GOTO 700
-80 IF (M$ = "A" OR M$="a") THEN M$ = "A": POKE 8,32: GOTO 800
+60 IF NOT (M$ = "A" OR M$ = "B" OR M$="a" OR M$="b") THEN GOTO 50
+70 IF (M$ = "B" OR M$ = "b") THEN M$ = "B" : POKE 8,64 : GOTO 700
+80 IF (M$ = "A" OR M$ = "a") THEN M$ = "A" : POKE 8,32 : GOTO 800
 700 HOME : VTAB 8
 710 PRINT "BYTE MODE:": PRINT "ENTER UP TO 78 ASCII CHARACTERS:"
 730 GOTO 1000
diff --git a/qrcode.dsk b/qrcode.dsk
index cfeeff1..51e5f89 100644
Binary files a/qrcode.dsk and b/qrcode.dsk differ