diff --git a/src/openapi/contracts/contracts-crud.yaml b/src/openapi/contracts/contracts-crud.yaml
index 1abb8d1..f3a77ff 100644
--- a/src/openapi/contracts/contracts-crud.yaml
+++ b/src/openapi/contracts/contracts-crud.yaml
@@ -630,7 +630,7 @@ paths:
             format: uuid
             example: f13dbd2d-315d-4839-b0db-e03a2cade495
           required: false
-          description: External reference of the invoice.
+          description: Id of the contract to fetch invoices for.
         - in: query
           name: externalReference
           schema: