diff --git a/Elwig/Windows/DeliveryAdminWindow.xaml b/Elwig/Windows/DeliveryAdminWindow.xaml
index 04c6542..87e59ae 100644
--- a/Elwig/Windows/DeliveryAdminWindow.xaml
+++ b/Elwig/Windows/DeliveryAdminWindow.xaml
@@ -529,12 +529,12 @@
                     </Grid.ColumnDefinitions>
                     <Label Content="Gradation:" Margin="10,10,10,10"/>
                     <ctrl:UnitTextBox x:Name="GradationOeInput" Unit="°Oe" Text="{Binding GradationOeString, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
-                                      TextChanged="GradationOeInput_TextChanged" KeyUp="Input_KeyUp"
+                                      TextChanged="GradationOeInput_TextChanged" LostFocus="GradationOeInput_LostFocus" KeyUp="Input_KeyUp"
                                       Grid.Column="1" Width="54" Margin="0,10,10,10" HorizontalAlignment="Left" VerticalAlignment="Top"/>
 
                     <Label Content="=" Margin="60,10,10,10" Grid.Column="1"/>
                     <ctrl:UnitTextBox x:Name="GradationKmwInput" Unit="°KMW" Text="{Binding GradationKmwString, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
-                                      TextChanged="GradationKmwInput_TextChanged" KeyUp="Input_KeyUp"
+                                      TextChanged="GradationKmwInput_TextChanged" LostFocus="GradationKmwInput_LostFocus" KeyUp="Input_KeyUp"
                                       Grid.Column="1" Width="68" Margin="78,10,10,10" HorizontalAlignment="Left" VerticalAlignment="Top"/>
 
                     <Label Content="Qualitätsstufe:" Margin="10,40,10,10"/>