diff --git a/proposals/4080-cryptographic-identities.md b/proposals/4080-cryptographic-identities.md
index dcfaccc1d..f5ea5346f 100644
--- a/proposals/4080-cryptographic-identities.md
+++ b/proposals/4080-cryptographic-identities.md
@@ -1,4 +1,4 @@
-# Cryptographic Identities (Client-Owned Identities)
+# MSC 4080: Cryptographic Identities (Client-Owned Identities)
 **THIS MSC IS IN PROGRESS AND WILL CHANGE AS IMPLEMENTATIONS LAND**
 
 Today’s Matrix does not allow users to move their account between homeservers. It would be beneficial to be able