diff --git a/content/rooms/fragments/v1-redactions.md b/content/rooms/fragments/v1-redactions.md
index f38c85f3..df2b991e 100644
--- a/content/rooms/fragments/v1-redactions.md
+++ b/content/rooms/fragments/v1-redactions.md
@@ -19,7 +19,7 @@ not in the following list:
 -   `membership`
 
 The content object must also be stripped of all keys, unless it is one
-of one of the following event types:
+of the following event types:
 
 -   `m.room.member` allows key `membership`.
 -   `m.room.create` allows key `creator`.
diff --git a/content/rooms/fragments/v6-redactions.md b/content/rooms/fragments/v6-redactions.md
index 71ecf854..a690b9e1 100644
--- a/content/rooms/fragments/v6-redactions.md
+++ b/content/rooms/fragments/v6-redactions.md
@@ -19,7 +19,7 @@ not in the following list:
 -   `membership`
 
 The content object must also be stripped of all keys, unless it is one
-of one of the following event types:
+of the following event types:
 
 -   `m.room.member` allows key `membership`.
 -   `m.room.create` allows key `creator`.
diff --git a/content/rooms/fragments/v9-redactions.md b/content/rooms/fragments/v9-redactions.md
index 18c100a5..3debd844 100644
--- a/content/rooms/fragments/v9-redactions.md
+++ b/content/rooms/fragments/v9-redactions.md
@@ -40,7 +40,7 @@ not in the following list:
 -   `membership`
 
 The content object must also be stripped of all keys, unless it is one
-of one of the following event types:
+of the following event types:
 
 -   `m.room.member` allows keys `membership`, `join_authorised_via_users_server`.
 -   `m.room.create` allows key `creator`.