diff --git a/lib/core/setting.js b/lib/core/setting.js
index d05c0b7..082ee4b 100644
--- a/lib/core/setting.js
+++ b/lib/core/setting.js
@@ -477,6 +477,11 @@ Group.setStatic(function unDry(obj, cloned) {
 	    child;
 
 	for (child of children) {
+
+		if (!child) {
+			continue;
+		}
+
 		result.children.set(child.name, child);
 		child.group = result;
 	}