diff --git a/ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/NumericUpDown/Themes/Generic.xaml b/ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/NumericUpDown/Themes/Generic.xaml
index 023cfe10..a7ad2765 100644
--- a/ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/NumericUpDown/Themes/Generic.xaml
+++ b/ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/NumericUpDown/Themes/Generic.xaml
@@ -43,6 +43,11 @@
                                                 Watermark="{Binding Watermark, RelativeSource={RelativeSource TemplatedParent}}"
                                                 WatermarkTemplate="{Binding WatermarkTemplate, RelativeSource={RelativeSource TemplatedParent}}"/>
                     </local:ButtonSpinner>
+                    <ControlTemplate.Triggers>
+                        <Trigger Property="IsEnabled" Value="False">
+                            <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}" />
+                        </Trigger>
+                    </ControlTemplate.Triggers>
                 </ControlTemplate>
             </Setter.Value>
         </Setter>