diff --git a/Source/Editor/Content/Items/VisualScriptItem.cs b/Source/Editor/Content/Items/VisualScriptItem.cs
index b99125f9b..54133e6e2 100644
--- a/Source/Editor/Content/Items/VisualScriptItem.cs
+++ b/Source/Editor/Content/Items/VisualScriptItem.cs
@@ -100,12 +100,16 @@ namespace FlaxEditor.Content
         /// <inheritdoc />
         public object GetValue(object obj)
         {
+            if (!_type.Asset)
+                throw new TargetException("Missing Visual Script asset.");
             return _type.Asset.GetScriptInstanceParameterValue(_parameter.Name, (Object)obj);
         }
 
         /// <inheritdoc />
         public void SetValue(object obj, object value)
         {
+            if (!_type.Asset)
+                throw new TargetException("Missing Visual Script asset.");
             _type.Asset.SetScriptInstanceParameterValue(_parameter.Name, (Object)obj, value);
         }
     }