Any idea why I'm having a fuse problem ?

@ __config _INTRC_OSC_NOCLKOUT & _WDT_ON & _MCLRE_OFF & _LVP_OFF
' & _PROTECT_OFF & _PWRT_ON & _BOD_ON & _CPD_OFF

compiles with no problem but as soon as I add any of the four commented fuses onto the line I get a compiler error

"Error [113] Symbol not previously defined."

These are the symbols I got out of the PBP Inc folder file M16F62XA. I'm using Microcode Studio, MPASM and I have the device selected as 16F628A

thanks, Andrew