diff --git a/packages/openactive-integration-tests/test/helpers/flow-stages/flow-stage-utils.js b/packages/openactive-integration-tests/test/helpers/flow-stages/flow-stage-utils.js
index de2ce905c3..c17df470e6 100644
--- a/packages/openactive-integration-tests/test/helpers/flow-stages/flow-stage-utils.js
+++ b/packages/openactive-integration-tests/test/helpers/flow-stages/flow-stage-utils.js
@@ -162,7 +162,7 @@ const FlowStageUtils = {
 
   /**
    * Randomly generate customer details
-   * @param {boolean} includeAllOptionalFields
+   * @param {boolean} [includeAllOptionalFields]
    * @returns {Customer}
    */
   createRandomCustomerDetails(includeAllOptionalFields) {