diff --git a/bip-???-cat.mediawiki b/bip-???-cat.mediawiki
index ea2213dd..8efe002d 100644
--- a/bip-???-cat.mediawiki
+++ b/bip-???-cat.mediawiki
@@ -79,6 +79,9 @@ The value of <code>MAX_SCRIPT_ELEMENT_SIZE</code> is 520.
   }
 </pre>
 
+==Backwards Compatibility==
+OP_CAT usage in any Non-SegWitV1 script will continue to trigger the SCRIPT_ERR_DISABLED_OPCODE.
+
 ==References==
 
 <references/>