diff --git a/SV6-Ride-Structure.md b/SV6-Ride-Structure.md
index 9905d56..d7dc24c 100644
--- a/SV6-Ride-Structure.md
+++ b/SV6-Ride-Structure.md
@@ -1,5 +1,7 @@
 The SV6 ride structure is the same number of bytes as the SV4 format, but varies slightly from the [ride structure in RCT1][structure]. Here is everything we know about it
 
+ [structure]: http://freerct.github.io/RCTTechDepot-Archive/SV4.html
+
 It is 608 bytes long. Addresses listed here are hex addresses. Leave a gap in between non-contiguous data.
 
 - 000: ride type