diff --git a/cartographer_ros/cartographer_ros/msg_conversion.cc b/cartographer_ros/cartographer_ros/msg_conversion.cc
index bc73b58..3b3afe5 100644
--- a/cartographer_ros/cartographer_ros/msg_conversion.cc
+++ b/cartographer_ros/cartographer_ros/msg_conversion.cc
@@ -375,7 +375,6 @@ std::unique_ptr<nav_msgs::OccupancyGrid> CreateOccupancyGridMsg(
   const int width = cairo_image_surface_get_width(painted_slices.surface.get());
   const int height =
       cairo_image_surface_get_height(painted_slices.surface.get());
-  const ros::Time now = ros::Time::now();
 
   occupancy_grid->header.stamp = time;
   occupancy_grid->header.frame_id = frame_id;