diff --git a/SV6-Ride-Structure.md b/SV6-Ride-Structure.md
index 1079125..b05ee18 100644
--- a/SV6-Ride-Structure.md
+++ b/SV6-Ride-Structure.md
@@ -14,7 +14,7 @@ It is 608 bytes long. Addresses listed here are hex addresses. Leave a gap in be
 
 - 049: status. 0 = closed, 1 = open, 2 = test 
 
-- 052-05A: 2-byte array of length 4, having something to do with ride excitement, nausea, etc. 
+- 052-05A: 2-byte array of length 4, having something to do with ride excitement, nausea, etc. 0xFFFF if it is empty/unused
 - 06A: a 4 byte array of entrance map coordinates (probably)
 
 - 0F0-0F1: excitement (signed integer)