diff --git a/src/app/shared/object-collection/shared/badges/themed-badges.component.ts b/src/app/shared/object-collection/shared/badges/themed-badges.component.ts
index dbc9b453072..260c32d2b47 100644
--- a/src/app/shared/object-collection/shared/badges/themed-badges.component.ts
+++ b/src/app/shared/object-collection/shared/badges/themed-badges.component.ts
@@ -21,7 +21,7 @@ import { BadgesComponent } from './badges.component';
 export class ThemedBadgesComponent extends ThemedComponent<BadgesComponent> {
   @Input() object: DSpaceObject;
   @Input() context: Context;
-  @Input() showAccessStatus = false;
+  @Input() showAccessStatus: boolean;
 
   protected inAndOutputNames: (keyof BadgesComponent & keyof this)[] = ['object', 'context', 'showAccessStatus'];
 
diff --git a/src/app/shared/search/search-sidebar/search-sidebar.component.ts b/src/app/shared/search/search-sidebar/search-sidebar.component.ts
index f7968ab95d6..54260534277 100644
--- a/src/app/shared/search/search-sidebar/search-sidebar.component.ts
+++ b/src/app/shared/search/search-sidebar/search-sidebar.component.ts
@@ -44,7 +44,7 @@ export class SearchSidebarComponent {
   /**
    * The configuration to use for the search options
    */
-  @Input() configuration;
+  @Input() configuration: string;
 
   /**
    * The list of available configuration options
diff --git a/src/app/shared/search/search-sidebar/themed-search-sidebar.component.ts b/src/app/shared/search/search-sidebar/themed-search-sidebar.component.ts
index a7c6af7a7b2..6e9325247f3 100644
--- a/src/app/shared/search/search-sidebar/themed-search-sidebar.component.ts
+++ b/src/app/shared/search/search-sidebar/themed-search-sidebar.component.ts
@@ -30,15 +30,15 @@ import { SearchSidebarComponent } from './search-sidebar.component';
 })
 export class ThemedSearchSidebarComponent extends ThemedComponent<SearchSidebarComponent> {
 
-  @Input() configuration;
+  @Input() configuration: string;
   @Input() configurationList: SearchConfigurationOption[];
   @Input() currentScope: string;
   @Input() currentSortOption: SortOptions;
   @Input() filters: Observable<RemoteData<SearchFilterConfig[]>>;
-  @Input() resultCount;
+  @Input() resultCount: number;
   @Input() viewModeList: ViewMode[];
-  @Input() showViewModes = true;
-  @Input() inPlaceSearch;
+  @Input() showViewModes: boolean;
+  @Input() inPlaceSearch: boolean;
   @Input() searchOptions: PaginatedSearchOptions;
   @Input() sortOptionsList: SortOptions[];
   @Input() refreshFilters: BehaviorSubject<boolean>;