diff --git a/frontend/src/app/app.component.spec.ts b/frontend/src/app/app.component.spec.ts
index 433496c..a0dea93 100644
--- a/frontend/src/app/app.component.spec.ts
+++ b/frontend/src/app/app.component.spec.ts
@@ -103,7 +103,7 @@ describe('AppComponent', () => {
       fixture.detectChanges();
 
       const items = fixture.debugElement.queryAll(By.css('ul.suggestions li'));
-      expect(items.length).toBe(2);
+      expect(items).toHaveSize(2);
       expect(items[0].nativeElement.textContent.trim()).toBe('java');
       expect(items[1].nativeElement.textContent.trim()).toBe('javascript');
     }));
diff --git a/frontend/src/app/services/autocomplete.service.spec.ts b/frontend/src/app/services/autocomplete.service.spec.ts
index 9aed896..623ca70 100644
--- a/frontend/src/app/services/autocomplete.service.spec.ts
+++ b/frontend/src/app/services/autocomplete.service.spec.ts
@@ -147,7 +147,7 @@ describe('AutocompleteService', () => {
       const req = http.expectOne(r => r.url === '/api/complete' && r.params.get('q') === 'ja');
       req.flush(mockEntries);
 
-      expect(emitted.length).toBe(1);
+      expect(emitted).toHaveSize(1);
       expect(emitted[0]).toEqual(mockEntries);
     }));
 
@@ -166,7 +166,7 @@ describe('AutocompleteService', () => {
       tick(150);
       http.expectNone('/api/complete');
 
-      expect(emitted.length).toBe(1);
+      expect(emitted).toHaveSize(1);
     }));
 
     it('cancels previous request on new query (switchMap)', fakeAsync(() => {
@@ -186,7 +186,7 @@ describe('AutocompleteService', () => {
       const secondReq = http.expectOne(r => r.url === '/api/complete' && r.params.get('q') === 'jav');
       secondReq.flush([{ query: 'javascript', score: 8 }]);
 
-      expect(results.length).toBe(1);
+      expect(results).toHaveSize(1);
       expect(results[0][0].query).toBe('javascript');
     }));
   });