diff --git a/src/main/webapp/app/lti/lti-course-card.component.ts b/src/main/webapp/app/lti/lti-course-card.component.ts
index 6fe432484e1a..9b3c0e69f074 100644
--- a/src/main/webapp/app/lti/lti-course-card.component.ts
+++ b/src/main/webapp/app/lti/lti-course-card.component.ts
@@ -15,7 +15,7 @@ import { ArtemisSharedModule } from 'app/shared/shared.module';
 })
 export class LtiCourseCardComponent implements OnChanges {
     readonly ARTEMIS_DEFAULT_COLOR = ARTEMIS_DEFAULT_COLOR;
-    course = input<Course>();
+    readonly course = input.required<Course>();
     CachingStrategy = CachingStrategy;
     courseColor: string;