1 files changed, 1 insertions, 8 deletions
diff --git a/src/fields/Doc.ts b/src/fields/Doc.ts
index 3169031b4..44314dca2 100644
--- a/src/fields/Doc.ts
+++ b/src/fields/Doc.ts
@@ -518,20 +518,13 @@ export namespace Doc {
     }
     export async function SetInPlace(doc: Doc, key: string, value: Field | undefined, defaultProto: boolean) {
         if (key.startsWith('_')) key = key.substring(1);
-        const hasProto = doc.proto instanceof Doc;
+        const hasProto = Doc.GetProto(doc) !== doc ? Doc.GetProto(doc) : undefined;
         const onDeleg = Object.getOwnPropertyNames(doc).indexOf(key) !== -1;
         const onProto = hasProto && Object.getOwnPropertyNames(doc.proto).indexOf(key) !== -1;
         if (onDeleg || !hasProto || (!onProto && !defaultProto)) {
             doc[key] = value;
         } else doc.proto![key] = value;
     }
-    export async function SetOnPrototype(doc: Doc, key: string, value: Field) {
-        const proto = Object.getOwnPropertyNames(doc).indexOf('isPrototype') === -1 ? doc.proto : doc;
-
-        if (proto) {
-            proto[key] = value;
-        }
-    }
     export function GetAllPrototypes(doc: Doc): Doc[] {
         const protos: Doc[] = [];
         let d: Opt<Doc> = doc;