diff --git a/app/eva_common.py b/app/eva_common.py
index f244f9b..10108db 100644
--- a/app/eva_common.py
+++ b/app/eva_common.py
@@ -1541,9 +1541,7 @@ def gen_inroad_num_problems(road_delay_infos, inroad_static_info_dict, roads_dir
                     ]
                 })
             detail.append(
-                {
-                    'child_detail': src_detail
-                }
+                src_detail
             )
             suggestions.append({
                 'child_detail': [