diff --git a/det-gen.py b/det-gen.py
index 3b89e44..5d88722 100644
--- a/det-gen.py
+++ b/det-gen.py
@@ -48,7 +48,7 @@ def det_orchid(keyname, raa, hda, hi):
 	h_orchid_left = bytes.fromhex(hex(int(b_prefix + b_hid + b_ogaid, 2))[2:])
 #	print(h_orchid_left.hex())
 	shake =  cSHAKE128.new(custom = ContextID)
-	shake.update((h_orchid_left + hi))
+	shake.update((h_orchid_left + bytes([0, 1, 0, 0]) + hi))
 	h_hash = shake.read(8).hex()
 #	print(h_hash)