diff --git a/spec.yaml b/spec.yaml
index 6aaaeda..89e54de 100644
--- a/spec.yaml
+++ b/spec.yaml
@@ -225,17 +225,13 @@ paths:
           schema:
             $ref: "#/definitions/AcceptedInviteResponse"
         400:
-          description: The invitation token is invalid.
+          description: The invitation token is invalid or does not exist.
           schema:
             $ref: "#/definitions/Error"
         403:
           description: Remote service is not trusted to accept invitations.
           schema:
             $ref: "#/definitions/Error"
-        404:
-          description: The invitation token does not exist.
-          schema:
-            $ref: "#/definitions/Error"
         409:
           description: User is already known by the OCM provider.
           schema: