diff --git a/api.planx.uk/modules/send/docs.yaml b/api.planx.uk/modules/send/docs.yaml
index 5273cb3357..5796bfd6a3 100644
--- a/api.planx.uk/modules/send/docs.yaml
+++ b/api.planx.uk/modules/send/docs.yaml
@@ -114,12 +114,6 @@ paths:
           schema:
             type: string
             format: uuid
-        - in: query
-          name: sessionId
-          required: true
-          schema:
-            type: string
-            format: uuid
         - in: query
           name: email
           required: true