diff --git a/drivers/usb/usbother/Tupfile.lua b/drivers/usb/usbother/Tupfile.lua
index 4ee3242ec..c8d887f91 100644
--- a/drivers/usb/usbother/Tupfile.lua
+++ b/drivers/usb/usbother/Tupfile.lua
@@ -1,4 +1,4 @@
 if tup.getconfig("NO_FASM") ~= "" then return end
 ROOT = "../../.."
 tup.rule("usbother.asm", "fasm %f %o " .. tup.getconfig("PESTRIP_CMD") .. tup.getconfig("KPACK_CMD"), "%B.sys")
-tup.rule("usbdrv.asm", "fasm %f %o " .. tup.getconfig("PESTRIP_CMD") .. tup.getconfig("KPACK_CMD"), "%B.dat")
+tup.rule("usbdrv.asm", "fasm %f %o " .. tup.getconfig("KPACK_CMD"), "%B.dat")