diff --git a/src/client/web/src/components/pane_admin.tsx b/src/client/web/src/components/pane_admin.tsx
index ee049e0..4804a4f 100644
--- a/src/client/web/src/components/pane_admin.tsx
+++ b/src/client/web/src/components/pane_admin.tsx
@@ -396,6 +396,7 @@ export class AdminPane extends React.Component<Props, State, {}> {
         pwd: this.state.newUserPwd1,
         role: this.state.newUserRole,
         quota: undefined,
+        usedSpace: "0",
       })
       .then((ok: boolean) => {
         if (!ok) {