diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-wpj531.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-wpj531.c
index 2cc2fe88ac..8a238da7d5 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-wpj531.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-wpj531.c
@@ -123,6 +123,7 @@ static void __init common_setup(void)
 	ath79_register_wmac(art + WPJ531_WMAC_CALDATA_OFFSET, NULL);
 
 	ath79_register_pci();
+	ath79_register_usb();
 }
 
 static void __init wpj531_setup(void)