diff --git a/target/linux/adm5120/files/arch/mips/adm5120/prom.c b/target/linux/adm5120/files/arch/mips/adm5120/prom.c
index 4ea9a6fdc..7d61490ca 100644
--- a/target/linux/adm5120/files/arch/mips/adm5120/prom.c
+++ b/target/linux/adm5120/files/arch/mips/adm5120/prom.c
@@ -137,6 +137,7 @@ static struct {
 	ZYXEL_BOARD(ZYNOS_BOARD_P334WH,	MACH_ADM5120_P334WH),
 	ZYXEL_BOARD(ZYNOS_BOARD_P334WHD, MACH_ADM5120_P334WHD),
 	ZYXEL_BOARD(ZYNOS_BOARD_P334WT,	MACH_ADM5120_P334WT),
+	ZYXEL_BOARD(ZYNOS_BOARD_P334WT_ALT,	MACH_ADM5120_P334WT),
 	ZYXEL_BOARD(ZYNOS_BOARD_P335,	MACH_ADM5120_P335),
 	ZYXEL_BOARD(ZYNOS_BOARD_P335PLUS, MACH_ADM5120_P335PLUS),
 	ZYXEL_BOARD(ZYNOS_BOARD_P335U,	MACH_ADM5120_P335U)
@@ -144,19 +145,19 @@ static struct {
 
 static unsigned long __init detect_machtype_bootbase(void)
 {
-	unsigned long ret;
 	int i;
 
-	ret = MACH_ADM5120_GENERIC;
 	for (i = 0; i < ARRAY_SIZE(zynos_boards); i++) {
 		if (zynos_boards[i].vendor_id == bootbase_info.vendor_id &&
 			zynos_boards[i].board_id == bootbase_info.board_id) {
-			ret = zynos_boards[i].mach_type;
+			return zynos_boards[i].mach_type;
 			break;
 		}
 	}
 
-	return ret;
+	printk(KERN_WARNING "Unknown ZyXEL model (%u)\n",
+				bootbase_info.board_id);
+	return MACH_ADM5120_GENERIC;
 }
 
 static struct {
diff --git a/target/linux/adm5120/files/include/asm-mips/mach-adm5120/prom/zynos.h b/target/linux/adm5120/files/include/asm-mips/mach-adm5120/prom/zynos.h
index c78a50af9..9ebf332b4 100644
--- a/target/linux/adm5120/files/include/asm-mips/mach-adm5120/prom/zynos.h
+++ b/target/linux/adm5120/files/include/asm-mips/mach-adm5120/prom/zynos.h
@@ -66,6 +66,7 @@ struct zynos_board_info {
 #define ZYNOS_BOARD_P334WH	0x00E0	/* Prestige 334WH */
 #define ZYNOS_BOARD_P334WHD	0x00E1	/* Prestige 334WHD */
 #define ZYNOS_BOARD_P334WT	0x9FEF	/* Prestige 334WT */
+#define ZYNOS_BOARD_P334WT_ALT	0x9F02	/* Prestige 334WT alternative */
 #define ZYNOS_BOARD_P335	0x9FED	/* Prestige 335/335WT */
 #define ZYNOS_BOARD_P335PLUS	0x0025	/* Prestige 335Plus */
 #define ZYNOS_BOARD_P335U	0x9FDC	/* Prestige 335U */