diff --git a/src/sudoku.s b/src/sudoku.s
index 2e3f825..564fc24 100644
--- a/src/sudoku.s
+++ b/src/sudoku.s
@@ -39,7 +39,7 @@ START:  MOVE  P,[-PDLLEN,,PDL-1]       ;Initialize the stack.
         PUSHJ P,GETJCL                 ;Read the command line.
         MOVE  A,[BPTR,,LOADING]        ;Print the loading message
         PUSHJ P,OUTSTR
-        MOVEI A,001                     ;Pretend the field name is SIXBIT
+        MOVEI A,000                     ;Pretend the field name is SIXBIT
         MOVEM A,PFLAGS                  ;Store flags in PFLAGS
         MOVE  A,[BPTR,,FNAME1]          ;Load FNAME1 into the A
         PUSHJ P,OUTSTR                  ;Print the name in a single line