diff --git a/assets/resources/scriptlets.js b/assets/resources/scriptlets.js
index 3d6f5a205..a8900800c 100644
--- a/assets/resources/scriptlets.js
+++ b/assets/resources/scriptlets.js
@@ -549,7 +549,7 @@
         const prop = chain.slice(0, pos);
         let v = owner[prop];
         chain = chain.slice(pos + 1);
-        if ( v !== undefined ) {
+        if ( v instanceof Object ) {
             makeProxy(v, chain);
             return;
         }