diff --git a/proposals/xxxx-deprecate-starting-verifications-without-request.md b/proposals/3122-deprecate-starting-verifications-without-request.md
similarity index 94%
rename from proposals/xxxx-deprecate-starting-verifications-without-request.md
rename to proposals/3122-deprecate-starting-verifications-without-request.md
index 3d0ec821b..ba4b2d7f3 100644
--- a/proposals/xxxx-deprecate-starting-verifications-without-request.md
+++ b/proposals/3122-deprecate-starting-verifications-without-request.md
@@ -1,4 +1,4 @@
-# MSCxxxx: Depretate starting key verifications without requesting first
+# MSC3122: Depretate starting key verifications without requesting first
 
 Currently, the spec allows a device to begin a verification via to-device
 messages by sending an `m.key.verification.start` event without first sending