diff --git a/contrib/C_Layer/ASM/Tupfile.lua b/contrib/C_Layer/ASM/Tupfile.lua
new file mode 100644
index 0000000000..ccbd6456c6
--- /dev/null
+++ b/contrib/C_Layer/ASM/Tupfile.lua
@@ -0,0 +1,2 @@
+if tup.getconfig("NO_FASM") ~= "" then return end
+tup.foreach_rule("*.asm", "fasm %f ../OBJ/%o " .. tup.getconfig("KPACK_CMD"), "../OBJ/%B.obj")