1 files changed, 1 insertions, 1 deletions
diff --git a/src/fields/Doc.ts b/src/fields/Doc.ts
index 0b9a8b3fe..63c67aeb0 100644
--- a/src/fields/Doc.ts
+++ b/src/fields/Doc.ts
@@ -216,7 +216,7 @@ export class Doc extends RefField {
         return self.resolvedDataDoc && !self.isTemplateForField ? self :
             Doc.GetProto(Cast(Doc.Layout(self).resolvedDataDoc, Doc, null) || self);
     }
-    @computed get __LAYOUT__() {
+    @computed get __LAYOUT__(): Doc | undefined {
         const templateLayoutDoc = Cast(Doc.LayoutField(this[SelfProxy]), Doc, null);
         if (templateLayoutDoc) {
             let renderFieldKey: any;