diff --git a/src/sudoku.s b/src/sudoku.s
index 5990c9e..adb4ddf 100644
--- a/src/sudoku.s
+++ b/src/sudoku.s
@@ -75,7 +75,7 @@ TOSLP:  ILDB  D,A                     ;Load the next character from A.
         JUMPE D,TOSEN                 ;Exit the loop, if charachter is null.
         CAIN  D,40                    ;If the character is a whitespace,
          JUMPA TOSEN                  ;exit the loop.
-        CAIN  D,[^M]                  ;If the character is a carriage return
+        CAIN  D,15                    ;If the character is a carriage return
          JUMPA TOSEN                  ;exit the loop.
         CAIL  D,140                   ;If the character is > 96,
          SUBI D,40                    ;then cut it down, so it's in range.