diff --git a/drivers/mouse/ps2mouse4d/Tupfile.lua b/drivers/mouse/ps2mouse4d/Tupfile.lua
index 783ef5c0f..ef3a11c0c 100644
--- a/drivers/mouse/ps2mouse4d/Tupfile.lua
+++ b/drivers/mouse/ps2mouse4d/Tupfile.lua
@@ -1,3 +1,3 @@
 if tup.getconfig("NO_FASM") ~= "" then return end
-ROOT = "../../../.."
+ROOT = "../../.."
 tup.rule("ps2mouse.asm", "fasm %f %o " .. tup.getconfig("PESTRIP_CMD") .. tup.getconfig("KPACK_CMD"), "%B.sys")