diff --git a/frontend/app/shared/state/contents.forms.spec.ts b/frontend/app/shared/state/contents.forms.spec.ts
index efc2df609..f61c84ca4 100644
--- a/frontend/app/shared/state/contents.forms.spec.ts
+++ b/frontend/app/shared/state/contents.forms.spec.ts
@@ -8,6 +8,7 @@
 // tslint:disable: max-line-length
 
 import { AbstractControl, FormArray } from '@angular/forms';
+import { DateHelper } from '@app/framework';
 import { AppLanguageDto, createProperties, DateTime, EditContentForm, FieldDefaultValue, FieldFormatter, FieldPropertiesDto, FieldsValidators, getContentValue, HtmlValue, LanguageDto, MetaFields, NestedFieldDto, RootFieldDto, SchemaDetailsDto, SchemaPropertiesDto, Version } from '@app/shared/internal';
 import { FieldRule } from './../services/schemas.service';
 import { FieldArrayForm } from './contents.forms';
@@ -21,6 +22,8 @@ const {
     creator
 } = TestValues;
 
+const now = DateTime.parseISO('2017-10-12T16:30:10Z');
+
 describe('SchemaDetailsDto', () => {
     const field1 = createField({ properties: createProperties('Array'), id: 1 });
     const field2 = createField({ properties: createProperties('Array'), id: 2 });
@@ -232,9 +235,12 @@ describe('BooleanField', () => {
 });
 
 describe('DateTimeField', () => {
-    const now = DateTime.parseISO('2017-10-12T16:30:10Z');
     const field = createField({ properties: createProperties('DateTime', { editor: 'DateTime', isRequired: true }) });
 
+    beforeEach(() => {
+        DateHelper.setlocale(null);
+    });
+
     it('should create validators', () => {
         expect(FieldsValidators.create(field, false).length).toBe(1);
     });