diff --git a/api/client-server/login.yaml b/api/client-server/login.yaml
index f6c92638..f122f209 100644
--- a/api/client-server/login.yaml
+++ b/api/client-server/login.yaml
@@ -154,7 +154,7 @@ paths:
             properties:
               user_id:
                 type: string
-                description: The fully-qualified Matrix ID that has been registered.
+                description: The fully-qualified Matrix ID for the account.
               access_token:
                 type: string
                 description: |-
diff --git a/api/client-server/logout.yaml b/api/client-server/logout.yaml
index 75a3ec87..eb84a739 100644
--- a/api/client-server/logout.yaml
+++ b/api/client-server/logout.yaml
@@ -39,7 +39,7 @@ paths:
         - accessToken: []
       responses:
         200:
-          description: The access token used in the request was succesfully invalidated.
+          description: The access token used in the request was successfully invalidated.
           schema:
             type: object
             properties: {}
@@ -64,7 +64,7 @@ paths:
         - accessToken: []
       responses:
         200:
-          description: The user's access tokens were succesfully invalidated.
+          description: The user's access tokens were successfully invalidated.
           schema:
             type: object
             properties: {}
diff --git a/changelogs/client_server/newsfragments/2599.clarification b/changelogs/client_server/newsfragments/2599.clarification
new file mode 100644
index 00000000..3ccb2333
--- /dev/null
+++ b/changelogs/client_server/newsfragments/2599.clarification
@@ -0,0 +1 @@
+Fix various typos throughout the specification.