diff --git a/src/Shared/HandyControl_Shared/Controls/Input/NumericUpDown.cs b/src/Shared/HandyControl_Shared/Controls/Input/NumericUpDown.cs
index b2967d9b..b4dd3940 100644
--- a/src/Shared/HandyControl_Shared/Controls/Input/NumericUpDown.cs
+++ b/src/Shared/HandyControl_Shared/Controls/Input/NumericUpDown.cs
@@ -106,10 +106,12 @@ private void TextBox_PreviewKeyDown(object sender, KeyEventArgs e)
         if (e.Key == Key.Up)
         {
             Value += Increment;
+            SetText(true);
         }
         else if (e.Key == Key.Down)
         {
             Value -= Increment;
+            SetText(true);
         }
     }