diff --git a/src/app/item-page/simple/metadata-representation-list/metadata-representation-list.component.ts b/src/app/item-page/simple/metadata-representation-list/metadata-representation-list.component.ts
index d5e6547778..59a5377f77 100644
--- a/src/app/item-page/simple/metadata-representation-list/metadata-representation-list.component.ts
+++ b/src/app/item-page/simple/metadata-representation-list/metadata-representation-list.component.ts
@@ -59,8 +59,10 @@ export class MetadataRepresentationListComponent extends AbstractIncrementalList
    */
   total: number;
 
-  constructor(public relationshipService: RelationshipDataService,
-              private browseDefinitionDataService: BrowseDefinitionDataService) {
+  constructor(
+    public relationshipService: RelationshipDataService,
+    protected browseDefinitionDataService: BrowseDefinitionDataService,
+  ) {
     super();
   }
 
diff --git a/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/external-source-tab/dynamic-lookup-relation-external-source-tab.component.ts b/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/external-source-tab/dynamic-lookup-relation-external-source-tab.component.ts
index 22fcc4e8bb..601bd8cce8 100644
--- a/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/external-source-tab/dynamic-lookup-relation-external-source-tab.component.ts
+++ b/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/external-source-tab/dynamic-lookup-relation-external-source-tab.component.ts
@@ -124,12 +124,13 @@ export class DsDynamicLookupRelationExternalSourceTabComponent implements OnInit
    */
   relatedEntityType: ItemType;
 
-  constructor(private router: Router,
-              public searchConfigService: SearchConfigurationService,
-              private externalSourceService: ExternalSourceDataService,
-              private modalService: NgbModal,
-              private selectableListService: SelectableListService,
-              private paginationService: PaginationService
+  constructor(
+    protected router: Router,
+    public searchConfigService: SearchConfigurationService,
+    protected externalSourceService: ExternalSourceDataService,
+    protected modalService: NgbModal,
+    protected selectableListService: SelectableListService,
+    protected paginationService: PaginationService,
   ) {
   }
 
diff --git a/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.ts b/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.ts
index cd4a8f7690..9452918a97 100644
--- a/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.ts
+++ b/src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.ts
@@ -147,12 +147,12 @@ export class DsDynamicLookupRelationSearchTabComponent implements OnInit, OnDest
   @Output() resultFound: EventEmitter<SearchObjects<DSpaceObject>> = new EventEmitter<SearchObjects<DSpaceObject>>();
 
   constructor(
-    private searchService: SearchService,
-    private selectableListService: SelectableListService,
+    protected searchService: SearchService,
+    protected selectableListService: SelectableListService,
     public searchConfigService: SearchConfigurationService,
     public lookupRelationService: LookupRelationService,
-    private relationshipService: RelationshipDataService,
-    private paginationService: PaginationService
+    protected relationshipService: RelationshipDataService,
+    protected paginationService: PaginationService,
   ) {
   }
 
diff --git a/src/app/shared/search-form/search-form.component.ts b/src/app/shared/search-form/search-form.component.ts
index 4d267381d8..9a569d1bb2 100644
--- a/src/app/shared/search-form/search-form.component.ts
+++ b/src/app/shared/search-form/search-form.component.ts
@@ -74,12 +74,13 @@ export class SearchFormComponent implements OnInit {
    */
   @Output() submitSearch = new EventEmitter<any>();
 
-  constructor(private router: Router,
-              private searchService: SearchService,
-              private paginationService: PaginationService,
-              private searchConfig: SearchConfigurationService,
-              private modalService: NgbModal,
-              private dsoService: DSpaceObjectDataService
+  constructor(
+    protected router: Router,
+    protected searchService: SearchService,
+    protected paginationService: PaginationService,
+    protected searchConfig: SearchConfigurationService,
+    protected modalService: NgbModal,
+    protected dsoService: DSpaceObjectDataService,
   ) {
   }
 
@@ -120,7 +121,7 @@ export class SearchFormComponent implements OnInit {
   updateSearch(data: any) {
     const queryParams = Object.assign({}, data);
 
-    this.router.navigate(this.getSearchLinkParts(), {
+    void this.router.navigate(this.getSearchLinkParts(), {
       queryParams: queryParams,
       queryParamsHandling: 'merge'
     });