diff --git a/20.md b/20.md
index 6c81cbe0..49e2396a 100644
--- a/20.md
+++ b/20.md
@@ -19,7 +19,7 @@ Relays MUST return `false` when the event was rejected and not saved.
 
 The `message` SHOULD provide additional information as to why the command succeeded or failed.
 
-The `message` SHOULD start with `blocked:` if the pubkey or network address has been blocked, banned or is not on a whitelist.
+The `message` SHOULD start with `blocked:` if the pubkey or network address has been blocked, banned, or is not on a whitelist.
 
 The `message` SHOULD start with `invalid:` if the event is invalid or doesn't meet some specific criteria (created_at is too far off, id is wrong, signature is wrong, etc)
 
@@ -90,4 +90,4 @@ The prefixes include a colon so that the message can be cleanly separated from t
 Future Extensions
 -----------------
 
-This proposal SHOULD be extended to support futher commands in the future, such as REQ and AUTH. They are left out of this initial version to keep things simpler.
+This proposal SHOULD be extended to support further commands in the future, such as REQ and AUTH. They are left out of this initial version to keep things simpler.