diff --git a/config/mapper_params_online_async.yaml b/config/mapper_params_online_async.yaml
index 8cbe916..79528d8 100644
--- a/config/mapper_params_online_async.yaml
+++ b/config/mapper_params_online_async.yaml
@@ -14,7 +14,7 @@ slam_toolbox:
     map_frame: map
     base_frame: base_footprint
     scan_topic: scan_filtered
-    mode: localization
+    mode: mapping #localization
 
     # if you'd like to immediately start continuing a map at a given pose
     # or at the dock, but they are mutually exclusive, if pose is given