diff --git a/src/Perspex.Controls/ItemsControl.cs b/src/Perspex.Controls/ItemsControl.cs
index 9a427ae59b..16873b7f05 100644
--- a/src/Perspex.Controls/ItemsControl.cs
+++ b/src/Perspex.Controls/ItemsControl.cs
@@ -257,7 +257,7 @@ namespace Perspex.Controls
 
             if (e.NewValue == null)
             {
-                ItemContainerGenerator.Clear();
+                ItemContainerGenerator?.Clear();
             }
         }