diff --git a/packages/material/test/renderers/MaterialCategorizationStepperLayout.test.tsx b/packages/material/test/renderers/MaterialCategorizationStepperLayout.test.tsx
index b226698ac..aed3fb592 100644
--- a/packages/material/test/renderers/MaterialCategorizationStepperLayout.test.tsx
+++ b/packages/material/test/renderers/MaterialCategorizationStepperLayout.test.tsx
@@ -23,7 +23,7 @@
   THE SOFTWARE.
 */
 
-import * as React from 'react';
+import React from 'react';
 import { Provider } from 'react-redux';
 import {
   Actions,
@@ -44,7 +44,7 @@ import MaterialCategorizationStepperLayoutRenderer, {
 import { materialFields, materialRenderers } from '../../src';
 import { Step, StepButton, Stepper } from '@material-ui/core';
 
-import * as Adapter from 'enzyme-adapter-react-16';
+import Adapter from 'enzyme-adapter-react-16';
 configure({ adapter: new Adapter() });
 
 export const initJsonFormsStore = (initState: any): Store<JsonFormsState> => {
diff --git a/packages/material/test/renderers/MaterialDateTimeControl.test.tsx b/packages/material/test/renderers/MaterialDateTimeControl.test.tsx
index 708ab85bd..0cd81e566 100644
--- a/packages/material/test/renderers/MaterialDateTimeControl.test.tsx
+++ b/packages/material/test/renderers/MaterialDateTimeControl.test.tsx
@@ -22,7 +22,7 @@
   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   THE SOFTWARE.
 */
-import * as React from 'react';
+import React from 'react';
 import {
   Actions,
   ControlElement,
@@ -40,9 +40,9 @@ import MaterialDateTimeControl, {
   materialDateTimeControlTester
 } from '../../src/controls/MaterialDateTimeControl';
 import { Provider } from 'react-redux';
-import * as TestUtils from 'react-dom/test-utils';
-import * as ReactDOM from 'react-dom';
-import * as moment from 'moment';
+import TestUtils from 'react-dom/test-utils';
+import ReactDOM from 'react-dom';
+import moment from 'moment';
 import { combineReducers, createStore, Store } from 'redux';
 import { materialFields, materialRenderers } from '../../src';
 
diff --git a/packages/react/test/renderers/JsonForms.test.tsx b/packages/react/test/renderers/JsonForms.test.tsx
index ebd9461b2..1a3fe6f50 100644
--- a/packages/react/test/renderers/JsonForms.test.tsx
+++ b/packages/react/test/renderers/JsonForms.test.tsx
@@ -22,7 +22,7 @@
   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   THE SOFTWARE.
 */
-import * as React from 'react';
+import React from 'react';
 import { combineReducers, createStore } from 'redux';
 import { Provider } from 'react-redux';
 import {
@@ -37,12 +37,12 @@ import {
     uiTypeIs,
     unregisterRenderer
 } from '@jsonforms/core';
-import * as Enzyme from 'enzyme';
+import Enzyme from 'enzyme';
 import { mount, shallow } from 'enzyme';
 import { StatelessRenderer } from '../../src/Renderer';
-import * as JsonRefs from 'json-refs';
+import JsonRefs from 'json-refs';
 
-import * as Adapter from 'enzyme-adapter-react-16';
+import Adapter from 'enzyme-adapter-react-16';
 import { JsonForms, JsonFormsDispatchRenderer } from '../../src/JsonForms';
 
 Enzyme.configure({ adapter: new Adapter() });
diff --git a/packages/test/src/index.ts b/packages/test/src/index.ts
index a29fb286c..29548b83b 100644
--- a/packages/test/src/index.ts
+++ b/packages/test/src/index.ts
@@ -24,7 +24,7 @@
 */
 import 'jsdom-global/register';
 // @ts-ignore
-import * as installCE from 'document-register-element/pony';
+import installCE from 'document-register-element/pony';
 declare let global: any;
 installCE(global, 'force');
 global.requestAnimationFrame = (cb: any) => setTimeout(cb, 0);