diff --git a/bip-0065.mediawiki b/bip-0065.mediawiki
index 3b477bd2..347f0dc1 100644
--- a/bip-0065.mediawiki
+++ b/bip-0065.mediawiki
@@ -273,14 +273,18 @@ https://github.com/petertodd/bitcoin/commit/ab0f54f38e08ee1e50ff72f801680ee84d0f
 
 ==Deployment==
 
-We reuse the double-threshold switchover mechanism from BIPs 34 and
-66, with the same thresholds, but for nVersion = 4. The new rules are
+We reuse the double-threshold IsSuperMajority() switchover mechanism used in
+BIP 66 with the same thresholds, but for nVersion = 4. The new rules are
 in effect for every block (at height H) with nVersion = 4 and at least
 750 out of 1000 blocks preceding it (with heights H-1000..H-1) also
 have nVersion = 4. Furthermore, when 950 out of the 1000 blocks
 preceding a block do have nVersion = 4, nVersion = 3 blocks become
 invalid, and all further blocks enforce the new rules.
 
+It should be noted that BIP9 involves permanently setting a high-order bit to
+1 which results in nVersion >= all prior IsSuperMajority() soft-forks and thus
+no bits in nVersion are permanently lost.
+
 
 ==Credits==