diff --git a/src/object.c b/src/object.c
index 16cefc0..41ce58a 100644
--- a/src/object.c
+++ b/src/object.c
@@ -525,7 +525,7 @@ void _copyList(Object* dest, const Object* src)
         } else if (isStringy(*POINTER)) {
             nf_addToList(dest, cloneString(*POINTER));
         } else {
-            nf_addToList(dest, *POINTER);
+            nf_addToList(dest, cloneObject(*POINTER));
         }
     }
 }