diff --git a/api/client-server/definitions/timeline_batch.yaml b/api/client-server/definitions/timeline_batch.yaml
index 44baa39f..ce613ac4 100644
--- a/api/client-server/definitions/timeline_batch.yaml
+++ b/api/client-server/definitions/timeline_batch.yaml
@@ -19,7 +19,7 @@ properties:
       on the filter
     type: boolean
   prev_batch:
-    description: A token that can be supplied to to the ``from`` parameter of the
+    description: A token that can be supplied to the ``from`` parameter of the
       rooms/{roomId}/messages endpoint
     type: string
 type: object