diff --git a/src/app/presence-control/services/presence-control-state.service.ts b/src/app/presence-control/services/presence-control-state.service.ts
index 0d8c3c2b1..03b3f5f40 100644
--- a/src/app/presence-control/services/presence-control-state.service.ts
+++ b/src/app/presence-control/services/presence-control-state.service.ts
@@ -112,7 +112,7 @@ export class PresenceControlStateService
     .pipe(shareReplay(1));
 
   selectedLessonStudentIds$ = combineLatest([
-    this.selectLesson$,
+    this.selectedLesson$,
     this.lessonPresences$,
   ]).pipe(
     map(([lesson, presences]) => {
diff --git a/src/app/shared/services/lesson-teachers-rest.service.ts b/src/app/shared/services/lesson-teachers-rest.service.ts
index cc49c89cd..54aafd892 100644
--- a/src/app/shared/services/lesson-teachers-rest.service.ts
+++ b/src/app/shared/services/lesson-teachers-rest.service.ts
@@ -18,7 +18,8 @@ export class LessonTeachersRestService extends RestService<
   }
 
   /**
-   * Returns all lesson absences for all teachers expect for the given teacher for the current lesson corresponding students
+   * Returns all lesson absences for the current lesson and the specified students
+   * for all teachers except the specified teacher.
    */
   loadOtherTeachersLessonAbsences(
     personId: number,