diff --git a/src/sudoku.s b/src/sudoku.s
index 564fc24..790766e 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,000                     ;Pretend the field name is SIXBIT
+        MOVEI A,001                     ;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
@@ -63,9 +63,9 @@ GETJCL: PUSH  P,A                      ;Save the register A.
         MOVE  A,[JCL]
         MOVE  A,[BPTR,,JCL]            ;Load the command parameters into A.
         MOVE  B,[BPTR,,FNAME1]         ;Pointer to the first file name.
-        PUSHJ P,CPSTR                  ;Transfer the first word into FNAME1
+        PUSHJ P,TOSIXB                 ;Transfer the first word into FNAME1
         MOVE  B,[BPTR,,FNAME2]         ;Pointer to the second file name.
-        PUSHJ P,CPSTR                  ;Transfer the second word into FNAME2
+        PUSHJ P,TOSIXB                 ;Transfer the second word into FNAME2
         POP   P,B                      ;Restore the B register.
         POP   P,A                      ;Restore the A register.
         POPJ  P,                       ;Return from routine.