diff --git a/app/src/main/java/net/pokeranalytics/android/ui/modules/filter/FilterDetailsViewModel.kt b/app/src/main/java/net/pokeranalytics/android/ui/modules/filter/FilterDetailsViewModel.kt
index ff4c26c5..61c9daad 100644
--- a/app/src/main/java/net/pokeranalytics/android/ui/modules/filter/FilterDetailsViewModel.kt
+++ b/app/src/main/java/net/pokeranalytics/android/ui/modules/filter/FilterDetailsViewModel.kt
@@ -13,7 +13,7 @@ import net.pokeranalytics.android.ui.view.rowrepresentable.FilterItemRow
 import net.pokeranalytics.android.util.NULL_TEXT
 import timber.log.Timber
 
-class FilterDetailsViewModelFactory(var filter: Filter, var categoryRow: FilterCategoryRow): ViewModelProvider.Factory {
+class FilterDetailsViewModelFactory(var filter: Filter, private var categoryRow: FilterCategoryRow): ViewModelProvider.Factory {
 
 	override fun <T : ViewModel?> create(modelClass: Class<T>): T {
 		return FilterDetailsViewModel(categoryRow, filter) as T