diff --git a/synapse/groups/attestations.py b/synapse/groups/attestations.py
index 21eb7e550..47452700a 100644
--- a/synapse/groups/attestations.py
+++ b/synapse/groups/attestations.py
@@ -25,7 +25,7 @@ Therefore attestations shouldn't be relied on to prove membership in important
 cases, but can for less important situtations, e.g. showing a users membership
 of groups on their profile, showing flairs, etc.
 
-An attestsation is a signed blob of json that looks like:
+An attestation is a signed blob of json that looks like:
 
     {
         "user_id": "@foo:a.example.com",