diff --git a/proposals/3480-private-device-names.md b/proposals/3480-private-device-names.md
index a3adcaa8..87bb097e 100644
--- a/proposals/3480-private-device-names.md
+++ b/proposals/3480-private-device-names.md
@@ -1,4 +1,4 @@
-# MSCxxxx: Make device names private
+# MSC3480: Make device names private
 
 Matrix allows users to use their account with multiple devices simultaneously.
 These devices may be given a human-readable name (`device_display_name` or