diff --git a/bip-0047.mediawiki b/bip-0047.mediawiki
index 3fb6a2a0..d49b0ea5 100644
--- a/bip-0047.mediawiki
+++ b/bip-0047.mediawiki
@@ -214,9 +214,9 @@ A recipient prefers to receive notifications via Bitmessage indiates this prefer
 
 The sender uses this information to construct a valid notification Bitmessage address:
 
-# Use the recipient's 0<sup>th</sup> public key as the Bitmessage signing key: <pre>B</pre>
+# Derive a Bitmessage signing key as: <pre>B = payment code / 0 / 0</pre>
 # Initialize a counter at 1: <pre>n</pre>
-# Derive a candidate encryption key: <pre>B' = B + nG</pre>
+# Derive a candidate encryption key as: <pre>B' = payment code / 0 / n</pre>
 # If the combination of B and B` do not form a valid Bitmessage address, increment n by one and try again
 # Use the address version, signing key, encryption key, and stream number to construct a Bitmessage address per the Bitmessage protocol