diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableAdapter.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableAdapter.kt
index 0f3e0029..422cc50e 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableAdapter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableAdapter.kt
@@ -36,7 +36,7 @@ class TimetableAdapter @Inject constructor() : RecyclerView.Adapter<RecyclerView
 
     var onClickListener: (Timetable) -> Unit = {}
 
-    private lateinit var showWholeClassPlan: TimetableMode
+    private var showWholeClassPlan = TimetableMode.ONLY_CURRENT_GROUP
 
     private var showGroupsInPlan: Boolean = false