diff --git a/proxyclient/m1n1/adt.py b/proxyclient/m1n1/adt.py
index ae04371a3..075db75fa 100644
--- a/proxyclient/m1n1/adt.py
+++ b/proxyclient/m1n1/adt.py
@@ -228,7 +228,6 @@
     "unk3" / Hex(Int8ul),
     "r0h" / Hex(Int8ul),
     "r0l" / Hex(Int8ul),
-    "unk4" / Hex(Int8ul),
     "pad" / Hex(Int32ul),
 )