diff --git a/components/Sizers/src/GridSplitter/GridSplitter.Helpers.cs b/components/Sizers/src/GridSplitter/GridSplitter.Helpers.cs
index 361fd77f..48928009 100644
--- a/components/Sizers/src/GridSplitter/GridSplitter.Helpers.cs
+++ b/components/Sizers/src/GridSplitter/GridSplitter.Helpers.cs
@@ -8,12 +8,12 @@ public partial class GridSplitter
 {
     private static bool IsStarColumn(ColumnDefinition definition)
     {
-        return ((GridLength)definition.GetValue(ColumnDefinition.WidthProperty)).IsStar;
+        return definition.Width.IsStar;
     }
 
     private static bool IsStarRow(RowDefinition definition)
     {
-        return ((GridLength)definition.GetValue(RowDefinition.HeightProperty)).IsStar;
+        return definition.Height.IsStar;
     }
 
     private bool SetColumnWidth(ColumnDefinition columnDefinition, double newWidth, GridUnitType unitType)