diff --git a/tips/TIP-0045/tip-0045.md b/tips/TIP-0045/tip-0045.md
index d5d9d717b..b82f881c7 100644
--- a/tips/TIP-0045/tip-0045.md
+++ b/tips/TIP-0045/tip-0045.md
@@ -650,8 +650,8 @@ The `Unlocks` field holds the unlocks which unlock the inputs in a _Transaction_
 
 #### Signature Unlock
 
-The <i>Signature Unlock</i> holds a signature signing the BLAKE2b-256 hash of the <i>Transaction</i> (including the
-optional payload). It is serialized as follows:
+The <i>Signature Unlock</i> holds a signature signing the BLAKE2b-256 hash of the serialized `Transaction` field. It is
+serialized as follows:
 
 <details>
   <summary>Signature Unlock</summary>