diff --git a/SmartAquaViewer/View/MonitoringView.xaml b/SmartAquaViewer/View/MonitoringView.xaml
index 1c1681b..f684447 100644
--- a/SmartAquaViewer/View/MonitoringView.xaml
+++ b/SmartAquaViewer/View/MonitoringView.xaml
@@ -272,7 +272,7 @@
                                                     <ListBox ItemsSource="{Binding TankGroups}"
                                                              DisplayMemberPath="Key"
                                                              SelectionMode="Extended"
-                                                             helper:MultiSelectBehavior.SelectedDictionary="{Binding SelectedWaterTanks, Mode=OneWay}"
+                                                             helper:MultiSelectBehavior.SelectedItems="{Binding SelectedWaterTanks, Mode=OneWay}"
                                                              helper:MultiSelectBehavior.KeyPath="Key"
                                                              helper:MultiSelectBehavior.ValuePath="Value"
                                                              Height="Auto" Background="White"