diff --git a/ros/planner/src/viplanner_node.py b/ros/planner/src/viplanner_node.py
index ac0feee..2ebd5d7 100644
--- a/ros/planner/src/viplanner_node.py
+++ b/ros/planner/src/viplanner_node.py
@@ -1029,7 +1029,7 @@ def rgbCamInfoCallback(self, cam_info_msg: CameraInfo):
 
     # model save path
     args.model_save = os.path.join(pack_path, args.model_save)
-    args.m2f_config_path = os.path.join(pack_path, args.m2f_cfg_file)
+    args.m2f_config_path = os.path.join(pack_path, os.path.expandvars(args.m2f_cfg_file))
     args.m2f_model_path = os.path.join(pack_path, args.m2f_model_path)
 
     node = VIPlannerNode(args)