diff --git a/lib/utils/avatar-utils.js b/lib/utils/avatar-utils.js
--- a/lib/utils/avatar-utils.js
+++ b/lib/utils/avatar-utils.js
@@ -1,6 +1,7 @@
 // @flow
 
-import t, { TInterface, TUnion } from 'tcomb';
+import t from 'tcomb';
+import type { TUnion, TInterface } from 'tcomb';
 
 import { tRegex, tShape, tString } from './validation-utils.js';
 import { validHexColorRegex } from '../shared/account-utils.js';