diff --git a/src/context/context.ts b/src/context/context.ts
index 959a1d8f2..872088615 100644
--- a/src/context/context.ts
+++ b/src/context/context.ts
@@ -159,7 +159,8 @@ const BLOCKED_SCOPE_KEYS: ReadonlySet<PropertyKey> = new Set(['__proto__', 'cons
 
 export function readJSProperty (obj: Scope, key: PropertyKey, ownPropertyOnly: boolean) {
   if (BLOCKED_SCOPE_KEYS.has(key)) {
-    if (ownPropertyOnly || !hasOwnProperty.call(obj, key)) return undefined
+    if (!hasOwnProperty.call(obj, key)) return undefined
+    if (ownPropertyOnly) return undefined
   }
   if (ownPropertyOnly && !hasOwnProperty.call(obj, key) && !(obj instanceof Drop)) return undefined
   return obj[key]