diff --git a/vms/platformvm/warp/payload/README.md b/vms/platformvm/warp/payload/README.md
index 38efd9c5c4b1..f15179042bb3 100644
--- a/vms/platformvm/warp/payload/README.md
+++ b/vms/platformvm/warp/payload/README.md
@@ -6,17 +6,17 @@ An Avalanche Unsigned Warp Message already includes a `networkID`, `sourceChainI
 
 AddressedPayload:
 ```
-+---------------------+----------+-------------------+
-|             codecID :   uint16 |           2 bytes |
-+---------------------+----------+-------------------+
-|              typeID :   uint32 |           4 bytes |
-+---------------------+----------+-------------------+
-|       sourceAddress : [20]byte |          20 bytes |
-+---------------------+----------+-------------------+
-|             payload :   []byte |  4 + len(payload) |
-+---------------------+----------+-------------------+
-                                 | 30  + len(payload) |
-                                 +-------------------+
++---------------------+--------+----------------------------------+
+|             codecID : uint16 |                          2 bytes |
++---------------------+--------+----------------------------------+
+|              typeID : uint32 |                          4 bytes |
++---------------------+--------+----------------------------------+
+|       sourceAddress : []byte |                 4 + len(address) |
++---------------------+--------+----------------------------------+
+|             payload : []byte |                 4 + len(payload) |
++---------------------+--------+----------------------------------+
+                               | 14 + len(payload) + len(address) |
+                               +----------------------------------+
 ```
 
 - `codecID` is the codec version used to serialize the payload and is hardcoded to `0x0000`