diff --git a/src/Avalonia.Controls/Calendar/CalendarItem.cs b/src/Avalonia.Controls/Calendar/CalendarItem.cs
index fc358ed06e..3432fa549d 100644
--- a/src/Avalonia.Controls/Calendar/CalendarItem.cs
+++ b/src/Avalonia.Controls/Calendar/CalendarItem.cs
@@ -198,6 +198,7 @@ namespace Avalonia.Controls.Primitives
                     if (_dayTitleTemplate != null)
                     {
                         var cell = _dayTitleTemplate.Build();
+                        cell.DataContext = string.Empty;
                         cell.SetValue(Grid.RowProperty, 0);
                         cell.SetValue(Grid.ColumnProperty, i);
                         MonthView.Children.Add(cell);