# isFallback

> If true, match this editor only if all non-fallback editors do not match. Defaults to false.

## Definition

* **Type:** Property
* **Namespace:** [UnityEditor](/engine/6000.7/script-reference/unityeditor.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public bool isFallback { get; set; }
```

### Remarks

Unity does a two-pass match to hook up editors with inspected types. First the non-fallback editors are tested, and if none match, then the fallbacks are tested for a match. Setting this flag lets you set up a default editor for a given type, while still permitting another editor type to override it.