bug in strcpy

I have the following structure:

struct fence_struct	{
  unsigned char	mode;
  char		sitename[13];
  unsigned char	sector_nr;
  unsigned char	sector_tot;
  unsigned int	start;
  unsigned int	feeder_offset;
  unsigned int	len;
  unsigned int	line_len;
  unsigned char	begin_far;
  unsigned int	res_norm;
  unsigned int	res_min;
  unsigned int	res_max;
  unsigned char	wire_amount;
  unsigned char	wire_name[12];
};

xdata struct fence_struct  fence;

I then initialise fence.sitename like this in the function init_vars():

strcpy(fence.sitename, "SITENAME");

and it generates this assembly:

;strcpy(fence.sitename, "SITENAME");
;SOURCE LINE # 1535
MOV  	R0,#LOW (fence+01H)
MOV  	R4,#HIGH (fence+01H)
MOV  	R5,A
MOV  	R3,#0FFH
MOV  	R2,#HIGH (?SC_403)
MOV  	R1,#LOW (?SC_403)
LCALL	?C?STRCPY

WHICH DOESN'T WORK

However, when I call exactly the same line in the function misc_info() it generates the following assembly:

;strcpy(fence.sitename, "SITENAME");
;SOURCE LINE # 4306
MOV  	R0,#LOW (fence+01H)
MOV  	R4,#HIGH (fence+01H)
MOV  	R5,#01H
MOV  	R3,#0FFH
MOV  	R2,#HIGH (?SC_403)
MOV  	R1,#LOW (?SC_403)
LCALL	?C?STRCPY

WHICH WORKS FINE

Why does it generate different assembly for the same source line and how can I rectify it?