diff --git a/frontend/src/js/dialog/wb-new-project-dialog.js b/frontend/src/js/dialog/wb-new-project-dialog.js
index ed5dd16..db46614 100644
--- a/frontend/src/js/dialog/wb-new-project-dialog.js
+++ b/frontend/src/js/dialog/wb-new-project-dialog.js
@@ -36,9 +36,9 @@ class WBNewProjectDialog extends Component {
           'owner_uuid': ownerUuid
         };
         makeArvadosRequest(arvHost, arvToken,
-          '/arvados/v1/groups', { 'method': 'POST',
+          '/arvados/v1/groups?async=true', { 'method': 'POST',
           'data': JSON.stringify(group),
-          'promiseOrdering': false }
+          'expectedStatus': 202 }
         ).then(callback);
       } }>
         <div>
diff --git a/frontend/src/js/misc/make-arvados-request.js b/frontend/src/js/misc/make-arvados-request.js
index 972f2c3..2cd82db 100644
--- a/frontend/src/js/misc/make-arvados-request.js
+++ b/frontend/src/js/misc/make-arvados-request.js
@@ -11,13 +11,15 @@ function makeArvadosRequest(arvHost, arvToken, endpoint, params={}) {
     'useSsl': true,
     'requireToken': true,
     'onProgress': () => {},
-    'promiseOrdering': true
+    'promiseOrdering': true,
+    'expectedStatus': 200
   };
 
   Object.keys(defaultParams).map(k => (params[k] =
     (k in params ? params[k] : defaultParams[k])));
   let { method, data, contentType, responseType,
-    useSsl, requireToken, onProgress, promiseOrdering } = params;
+    useSsl, requireToken, onProgress, promiseOrdering,
+    expectedStatus } = params;
 
   if (!(arvHost && (arvToken || !requireToken)))
     return new Promise((accept, reject) => reject());
@@ -36,7 +38,7 @@ function makeArvadosRequest(arvHost, arvToken, endpoint, params={}) {
     xhr.onreadystatechange = () => {
       if (xhr.readyState !== 4)
         return;
-      if (xhr.status !== 200)
+      if (xhr.status !== expectedStatus)
         reject(xhr);
       else
         accept(xhr);
diff --git a/frontend/src/js/misc/wb-delete-object.js b/frontend/src/js/misc/wb-delete-object.js
index eb8e510..af2ac4e 100644
--- a/frontend/src/js/misc/wb-delete-object.js
+++ b/frontend/src/js/misc/wb-delete-object.js
@@ -5,7 +5,7 @@ function wbDeleteObject(arvHost, arvToken, uuid) {
   const typeName = arvadosTypeName(uuid);
   return makeArvadosRequest(arvHost, arvToken,
     '/arvados/v1/' + typeName + 's/' +
-    uuid, { 'method': 'DELETE', 'promiseOrdering': false });
+    uuid, { 'method': 'DELETE' });
 }
 
 export default wbDeleteObject;