diff --git a/buildroot-external/kernel/device-support.config b/buildroot-external/kernel/device-support.config
index 35896f725..cd79e68ee 100644
--- a/buildroot-external/kernel/device-support.config
+++ b/buildroot-external/kernel/device-support.config
@@ -8,6 +8,7 @@ CONFIG_USB_SERIAL_FTDI_SIO=m
 CONFIG_USB_SERIAL_PL2303=m
 CONFIG_USB_SERIAL_CH341=m
 CONFIG_USB_SERIAL_TI=m
+CONFIG_USB_SERIAL_KEYSPAN=m
 
 CONFIG_USB_ACM=m
 CONFIG_USB_USBNET=m