diff --git a/arch/mips/lasat/prom.c b/arch/mips/lasat/prom.c
index 209edcc..6acc6cb 100644
--- a/arch/mips/lasat/prom.c
+++ b/arch/mips/lasat/prom.c
@@ -86,18 +86,16 @@
 
 	setup_prom_vectors();
 
-	if (current_cpu_data.cputype == CPU_R5000) {
+	if (IS_LASAT_200()) {
 		printk(KERN_INFO "LASAT 200 board\n");
-		mips_machtype = MACH_LASAT_200;
 		lasat_ndelay_divider = LASAT_200_DIVIDER;
+		at93c = &at93c_defs[1];
 	} else {
 		printk(KERN_INFO "LASAT 100 board\n");
-		mips_machtype = MACH_LASAT_100;
 		lasat_ndelay_divider = LASAT_100_DIVIDER;
+		at93c = &at93c_defs[0];
 	}
 
-	at93c = &at93c_defs[mips_machtype];
-
 	lasat_init_board_info();		/* Read info from EEPROM */
 
 	/* Get the command line */