diff --git a/boot.source b/boot.source
index df39b51..0d202c1 100644
--- a/boot.source
+++ b/boot.source
@@ -9,7 +9,7 @@ fdt apply 0x2608000
 tftp ${kernel_addr_r} rpi3/zImage || reset
 setenv nfs_bootargs "rootwait rw root=/dev/nfs earlyprintk"
 setenv console_bootargs "8250.nr_uarts=1 console=ttyS0,115200"
-setenv rpi_bootargs "smsc95xx.macaddr=${ethaddr}"
+setenv rpi_bootargs "smsc95xx.macaddr=${ethaddr} dwc_otg.speed=1"
 setenv other_bootargs "ip=dhcp panic=15"
 setenv bootargs "$nfs_bootargs $console_bootargs $rpi_bootargs $other_bootargs"
 bootz ${kernel_addr_r} - ${fdt_addr_r} || reset