diff --git a/README.md b/README.md
index 5d4872894cdf38870ffb848f246a26e92ad6d525..06eeb9b752e09524c55453cf377df6c9b8eb18e5 100644
--- a/README.md
+++ b/README.md
@@ -12,13 +12,13 @@ We will be using the log as a dumb consistent ledger. To this end we need to
 log to clients.
 
 We are going to handle both of these through a new method in the `Client`
-service: `Cmd`. `Cmd` takes identity, a string command, and a `maxSeenSlot`
+service: `Cmd`. `Cmd` takes identity, a string command, and a `seen`
 value that specifies the prefix of the shared log seen by the client previously.
 
 This function:
 - commits the string onto the shared log, 
 - synchronously waits until it has been committed, and then 
-- returns everything in the log from `maxSlotSeen` until the slot containing the new command. 
+- returns everything in the log from `slot` until the slot containing the new command. 
 
 The client can use this to create local copy of the log that
 it will use to implement and interpret gets, puts, and transactions.