diff --git a/frontend/src/app/shared/custom/okr-tangram/okr-tangram.component.ts b/frontend/src/app/shared/custom/okr-tangram/okr-tangram.component.ts
index 94f1683e8d..7f871e2454 100644
--- a/frontend/src/app/shared/custom/okr-tangram/okr-tangram.component.ts
+++ b/frontend/src/app/shared/custom/okr-tangram/okr-tangram.component.ts
@@ -9,10 +9,12 @@ import { BehaviorSubject, map, Observable, Subject, Subscription } from 'rxjs';
   styleUrl: 'okr-tangram.component.scss',
 })
 export class OkrTangramComponent {
-  private readonly defaultTrianglesSrc = 'assets/images/empty.svg';
+  private readonly DEFAULT_TRIANGLE_SRC = 'assets/images/empty.svg';
   trianglesSrc$ = new Observable<string>();
 
   constructor(private readonly configService: ConfigService) {
-    this.trianglesSrc$ = this.configService.config$.pipe(map((config) => config.triangles || this.defaultTrianglesSrc));
+    this.trianglesSrc$ = this.configService.config$.pipe(
+      map((config) => config.triangles || this.DEFAULT_TRIANGLE_SRC),
+    );
   }
 }
diff --git a/frontend/src/app/team-management/team-management.component.spec.ts b/frontend/src/app/team-management/team-management.component.spec.ts
index ffa1631fec..7a1fff46c1 100644
--- a/frontend/src/app/team-management/team-management.component.spec.ts
+++ b/frontend/src/app/team-management/team-management.component.spec.ts
@@ -23,6 +23,7 @@ import { FormsModule, ReactiveFormsModule } from '@angular/forms';
 import { MatTableModule } from '@angular/material/table';
 import { testUser, users } from '../shared/testData';
 import { UserService } from '../services/user.service';
+import { ConfigService } from '../services/config.service';
 
 describe('TeamManagementComponent', () => {
   let component: TeamManagementComponent;
@@ -37,6 +38,10 @@ describe('TeamManagementComponent', () => {
     getUsers: () => of(users),
   };
 
+  const configServiceMock = {
+    config$: of({}),
+  };
+
   beforeEach(async () => {
     await TestBed.configureTestingModule({
       imports: [
@@ -69,6 +74,7 @@ describe('TeamManagementComponent', () => {
       providers: [
         { provide: ActivatedRoute, useValue: activatedRouteMock },
         { provide: UserService, useValue: userServiceMock },
+        { provide: ConfigService, useValue: configServiceMock },
       ],
     }).compileComponents();
   });