diff --git a/MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.PasswordBox.xaml b/MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.PasswordBox.xaml
index 8eadcf24b0..534735dba9 100644
--- a/MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.PasswordBox.xaml
+++ b/MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.PasswordBox.xaml
@@ -408,11 +408,11 @@
     <Setter Property="wpf:HintAssist.Foreground" Value="{DynamicResource PrimaryHueMidBrush}" />
     <Setter Property="wpf:TextFieldAssist.TextBoxViewMargin" Value="{x:Static wpf:Constants.DefaultTextBoxViewMargin}" />
     <Setter Property="wpf:TextFieldAssist.UnderlineBrush" Value="{DynamicResource PrimaryHueMidBrush}" />
-    <Setter Property="wpf:StylizedBehaviors.Behaviors">
+    <Setter Property="wpf:BehaviorsAssist.Behaviors">
       <Setter.Value>
-        <wpf:StylizedBehaviorCollection>
+        <wpf:BehaviorCollection>
           <internalbehaviors:PasswordBoxBehavior />
-        </wpf:StylizedBehaviorCollection>
+        </wpf:BehaviorCollection>
       </Setter.Value>
     </Setter>
   </Style>
@@ -908,11 +908,11 @@
     <Setter Property="wpf:TextFieldAssist.TextBoxViewMargin" Value="{x:Static wpf:Constants.DefaultTextBoxViewMargin}" />
     <Setter Property="wpf:TextFieldAssist.UnderlineBrush" Value="{DynamicResource PrimaryHueMidBrush}" />
     <Setter Property="wpf:PasswordBoxAssist.SuppressBindingGuard" Value="True" />
-    <Setter Property="wpf:StylizedBehaviors.Behaviors">
+    <Setter Property="wpf:BehaviorsAssist.Behaviors">
       <Setter.Value>
-        <wpf:StylizedBehaviorCollection>
+        <wpf:BehaviorCollection>
           <internalbehaviors:PasswordBoxBehavior />
-        </wpf:StylizedBehaviorCollection>
+        </wpf:BehaviorCollection>
       </Setter.Value>
     </Setter>
   </Style>