diff --git a/localization/ndt_scan_matcher/src/map_update_module.cpp b/localization/ndt_scan_matcher/src/map_update_module.cpp
index 17bafcfedfe80..d00f40b0b382c 100644
--- a/localization/ndt_scan_matcher/src/map_update_module.cpp
+++ b/localization/ndt_scan_matcher/src/map_update_module.cpp
@@ -71,12 +71,14 @@ void MapUpdateModule::update_map(const geometry_msgs::msg::Point & position)
   if (need_rebuild_) {
     ndt_ptr_mutex_->lock();
     auto param = ndt_ptr_->getParams();
+    auto input_source = ndt_ptr_->getInputSource();
 
     ndt_ptr_.reset(new NdtType);
 
     ndt_ptr_->setParams(param);
 
     update_ndt(position, *ndt_ptr_);
+    ndt_ptr_->setInputSource(input_source);
     ndt_ptr_mutex_->unlock();
     need_rebuild_ = false;
   } else {