diff --git a/src/Avalonia.Base/PropertyStore/ValueStore.cs b/src/Avalonia.Base/PropertyStore/ValueStore.cs
index 789383b860..9600e2d3bc 100644
--- a/src/Avalonia.Base/PropertyStore/ValueStore.cs
+++ b/src/Avalonia.Base/PropertyStore/ValueStore.cs
@@ -200,7 +200,7 @@ namespace Avalonia.PropertyStore
         {
             if (property.ValidateValue?.Invoke(value) == false)
             {
-                throw new ArgumentException($"{value} is not a valid value for '{property.Name}.");
+                throw new ArgumentException($"{value} is not a valid value for '{property.Name}'.");
             }
 
             if (priority != BindingPriority.LocalValue)