diff --git a/changelogs/client_server/newsfragments/1748.clarification b/changelogs/client_server/newsfragments/1748.clarification
new file mode 100644
index 00000000..3ccb2333
--- /dev/null
+++ b/changelogs/client_server/newsfragments/1748.clarification
@@ -0,0 +1 @@
+Fix various typos throughout the specification.
diff --git a/content/client-server-api/modules/sso_login.md b/content/client-server-api/modules/sso_login.md
index 95a3e23a..1a46c84d 100644
--- a/content/client-server-api/modules/sso_login.md
+++ b/content/client-server-api/modules/sso_login.md
@@ -10,7 +10,7 @@ This module allows a Matrix homeserver to delegate user authentication
 to an external authentication server supporting one of these protocols.
 In this process, there are three systems involved:
 
--   A Matrix client, using the APIs defined this specification, which
+-   A Matrix client, using the APIs defined in this specification, which
     is seeking to authenticate a user to a Matrix homeserver.
 -   A Matrix homeserver, implementing the APIs defined in this
     specification, but which is delegating user authentication to the