diff --git a/main/gbx/gbx_subr_string.c b/main/gbx/gbx_subr_string.c
index b56de39db..6d1c07421 100644
--- a/main/gbx/gbx_subr_string.c
+++ b/main/gbx/gbx_subr_string.c
@@ -174,8 +174,10 @@ void SUBR_file(ushort code)
 
 	for (i = 0; i < NPARAM; i++)
 	{
-		/*VALUE_conv(&PARAM[i], T_STRING);*/
-		SUBR_get_string_len(&PARAM[i], &addr, &len);
+		VALUE_conv_string(&PARAM[i]);
+		addr = PARAM[i]._string.addr;
+		len = PARAM[i]._string.len;
+		//SUBR_get_string_len(&PARAM[i], &addr, &len);
 
 		if (len > 0)
 		{