diff --git a/src/app/core/data/item-data.service.ts b/src/app/core/data/item-data.service.ts
index 79719e502c..96007f5598 100644
--- a/src/app/core/data/item-data.service.ts
+++ b/src/app/core/data/item-data.service.ts
@@ -257,7 +257,7 @@ export abstract class BaseItemDataService extends IdentifiableDataService<Item>
       headers = headers.append('Content-Type', 'application/json');
       options.headers = headers;
       // Pass identifier type as a simple parameter, no need for full JSON data
-      let hrefWithParams: string = this.buildHrefWithParams(href, [new RequestParam("type", "doi")]);
+      let hrefWithParams: string = this.buildHrefWithParams(href, [new RequestParam('type', 'doi')]);
       const request = new PostRequest(requestId, hrefWithParams, JSON.stringify({}), options);
       this.requestService.send(request);
     });
diff --git a/src/app/item-page/edit-item-page/item-register-doi/item-registerdoi.component.ts b/src/app/item-page/edit-item-page/item-register-doi/item-registerdoi.component.ts
index 875bcbac7e..5f20c2a3d9 100644
--- a/src/app/item-page/edit-item-page/item-register-doi/item-registerdoi.component.ts
+++ b/src/app/item-page/edit-item-page/item-register-doi/item-registerdoi.component.ts
@@ -11,9 +11,9 @@ import { getFirstCompletedRemoteData, getFirstSucceededRemoteData } from '../../
 import { first, map } from 'rxjs/operators';
 import { hasValue } from '../../../shared/empty.util';
 import { Observable } from 'rxjs';
-import {getItemEditRoute, getItemPageRoute} from '../../item-page-routing-paths';
+import { getItemPageRoute } from '../../item-page-routing-paths';
 import { IdentifierDataService } from '../../../core/data/identifier-data.service';
-import {Identifier} from '../../../shared/object-list/identifier-data/identifier.model';
+import { Identifier } from '../../../shared/object-list/identifier-data/identifier.model';
 
 @Component({
   selector: 'ds-item-registerdoi',
diff --git a/src/app/item-page/edit-item-page/item-status/item-status.component.ts b/src/app/item-page/edit-item-page/item-status/item-status.component.ts
index 20f167fb80..0f3b44f26d 100644
--- a/src/app/item-page/edit-item-page/item-status/item-status.component.ts
+++ b/src/app/item-page/edit-item-page/item-status/item-status.component.ts
@@ -4,7 +4,7 @@ import { Item } from '../../../core/shared/item.model';
 import { ActivatedRoute } from '@angular/router';
 import { ItemOperation } from '../item-operation/itemOperation.model';
 import {distinctUntilChanged, first, map, mergeMap, toArray} from 'rxjs/operators';
-import {BehaviorSubject, Observable, from as observableFrom, Subscription, combineLatest, of} from 'rxjs';
+import { BehaviorSubject, Observable, from as observableFrom, Subscription, combineLatest } from 'rxjs';
 import { RemoteData } from '../../../core/data/remote-data';
 import { getItemEditRoute, getItemPageRoute } from '../../item-page-routing-paths';
 import { AuthorizationDataService } from '../../../core/data/feature-authorization/authorization-data.service';
@@ -13,10 +13,10 @@ import { hasValue } from '../../../shared/empty.util';
 import {
   getAllSucceededRemoteDataPayload,
 } from '../../../core/shared/operators';
-import {IdentifierDataService} from '../../../core/data/identifier-data.service';
-import {Identifier} from '../../../shared/object-list/identifier-data/identifier.model';
-import {ConfigurationProperty} from '../../../core/shared/configuration-property.model';
-import {ConfigurationDataService} from '../../../core/data/configuration-data.service';
+import { IdentifierDataService } from '../../../core/data/identifier-data.service';
+import { Identifier } from '../../../shared/object-list/identifier-data/identifier.model';
+import { ConfigurationProperty } from '../../../core/shared/configuration-property.model';
+import { ConfigurationDataService } from '../../../core/data/configuration-data.service';
 
 @Component({
   selector: 'ds-item-status',
diff --git a/src/app/submission/sections/identifiers/section-identifiers.component.spec.ts b/src/app/submission/sections/identifiers/section-identifiers.component.spec.ts
index b381bdf33c..6a001c4d5f 100644
--- a/src/app/submission/sections/identifiers/section-identifiers.component.spec.ts
+++ b/src/app/submission/sections/identifiers/section-identifiers.component.spec.ts
@@ -7,7 +7,7 @@ import { NoopAnimationsModule } from '@angular/platform-browser/animations';
 
 import { NgxPaginationModule } from 'ngx-pagination';
 import { cold } from 'jasmine-marbles';
-import {Observable, of as observableOf} from 'rxjs';
+import { of as observableOf } from 'rxjs';
 import { TranslateModule } from '@ngx-translate/core';
 
 import { createSuccessfulRemoteDataObject$ } from '../../../shared/remote-data.utils';
@@ -25,7 +25,7 @@ import { FormService } from '../../../shared/form/form.service';
 import { SubmissionFormsConfigDataService } from '../../../core/config/submission-forms-config-data.service';
 import { SectionDataObject } from '../models/section-data.model';
 import { SectionsType } from '../sections-type';
-import {mockSectionsData, mockSubmissionCollectionId, mockSubmissionId} from '../../../shared/mocks/submission.mock';
+import { mockSubmissionCollectionId, mockSubmissionId } from '../../../shared/mocks/submission.mock';
 import { JsonPatchOperationPathCombiner } from '../../../core/json-patch/builder/json-patch-operation-path-combiner';
 import { SubmissionSectionIdentifiersComponent } from './section-identifiers.component';
 import { CollectionDataService } from '../../../core/data/collection-data.service';