diff --git a/bip-0065.mediawiki b/bip-0065.mediawiki
index 15759568..a2bd40ea 100644
--- a/bip-0065.mediawiki
+++ b/bip-0065.mediawiki
@@ -282,6 +282,16 @@ preceding a block do have nVersion >= 4, nVersion < 4 blocks become
 invalid, and all further blocks enforce the new rules.
 
 
+===SPV Clients===
+
+While SPV clients are (currently) unable to validate blocks in general,
+trusting miners to do validation for them, they are able to validate block
+headers and thus can validate a subset of the deployment rules. SPV clients
+should reject nVersion < 4 blocks if 950 out of 1000 preceding blocks have
+nVersion >= 4 to prevent false confirmations from the remaining 5% of
+non-upgraded miners when the 95% threshold has been reached.
+
+
 ==Credits==
 
 Thanks goes to Gregory Maxwell for suggesting that the argument be compared