diff --git a/fifa17-recon/tools/live/diff_kit_records.py b/fifa17-recon/tools/live/diff_kit_records.py
index 357d6d5..d617c06 100755
--- a/fifa17-recon/tools/live/diff_kit_records.py
+++ b/fifa17-recon/tools/live/diff_kit_records.py
@@ -60,8 +60,10 @@ root = q(owner + 0x160D8)
 FIELDS = {
     0x08: ("id", 8),
     0x18: ("resourceId/definitionId", 4),
-    0x1C: ("assetId", 4),
-    0x20: ("cardassetid", 4),
+    # Offsets per club_items.json `_record_map`, which is authoritative:
+    # cardassetid is +0x1c and assetId is +0x20 — NOT the other way round.
+    0x1C: ("cardassetid", 4),
+    0x20: ("assetId", 4),
     0x38: ("discardValue", 4),
     0x4C: ("cardtype", 4),
     0x50: ("cardsubtypeid", 4),