diff --git a/scm-ui-components/packages/ui-components/src/apiclient.js b/scm-ui-components/packages/ui-components/src/apiclient.js
index 80c2c4dbfa..2ad0cd1f9f 100644
--- a/scm-ui-components/packages/ui-components/src/apiclient.js
+++ b/scm-ui-components/packages/ui-components/src/apiclient.js
@@ -3,17 +3,16 @@ import { contextPath } from "./urls";
 import { createBackendError, ForbiddenError, isBackendError, UnauthorizedError } from "./errors";
 import type { BackendErrorContent } from "./errors";
 
-const fetchOptions: RequestOptions = {
-  credentials: "same-origin",
-  headers: {
+const applyFetchOptions: (RequestOptions) => RequestOptions = o => {
+  o.credentials = "same-origin";
+  o.headers = {
     Cache: "no-cache",
     // identify the request as ajax request
     "X-Requested-With": "XMLHttpRequest"
-  }
+  };
+  return o;
 };
 
-
-
 function handleFailure(response: Response) {
   if (!response.ok) {
     if (isBackendError(response)) {
@@ -47,7 +46,7 @@ export function createUrl(url: string) {
 
 class ApiClient {
   get(url: string): Promise<Response> {
-    return fetch(createUrl(url), fetchOptions).then(handleFailure);
+    return fetch(createUrl(url), applyFetchOptions).then(handleFailure);
   }
 
   post(url: string, payload: any, contentType: string = "application/json") {
@@ -73,7 +72,7 @@ class ApiClient {
     let options: RequestOptions = {
       method: "HEAD"
     };
-    options = Object.assign(options, fetchOptions);
+    options = applyFetchOptions(options);
     return fetch(createUrl(url), options).then(handleFailure);
   }
 
@@ -81,7 +80,7 @@ class ApiClient {
     let options: RequestOptions = {
       method: "DELETE"
     };
-    options = Object.assign(options, fetchOptions);
+    options = applyFetchOptions(options);
     return fetch(createUrl(url), options).then(handleFailure);
   }
 
@@ -99,7 +98,7 @@ class ApiClient {
   }
 
   httpRequestWithBinaryBody(options: RequestOptions, url: string, contentType?: string) {
-    options = Object.assign(options, fetchOptions);
+    options = applyFetchOptions(options);
     if (contentType) {
       // $FlowFixMe
       options.headers["Content-Type"] = contentType;