diff --git a/bip-0133.mediawiki b/bip-0133.mediawiki
index d6d7437a..b5146e33 100644
--- a/bip-0133.mediawiki
+++ b/bip-0133.mediawiki
@@ -43,3 +43,6 @@ Older clients remain fully compatible and interoperable after this change.  The
 ==Implementation==
 
 https://github.com/bitcoin/bitcoin/pull/7542
+
+==Copyright==
+This document is placed in the public domain.