diff --git a/cartographer_ros/cartographer_ros/cartographer_grpc/offline_node_grpc_main.cc b/cartographer_ros/cartographer_ros/cartographer_grpc/offline_node_grpc_main.cc
index ccaf317..507fea4 100644
--- a/cartographer_ros/cartographer_ros/cartographer_grpc/offline_node_grpc_main.cc
+++ b/cartographer_ros/cartographer_ros/cartographer_grpc/offline_node_grpc_main.cc
@@ -17,6 +17,7 @@
 #include "cartographer_grpc/mapping/map_builder_stub.h"
 #include "cartographer_ros/offline_node.h"
 #include "cartographer_ros/ros_log_sink.h"
+#include "gflags/gflags.h"
 #include "ros/ros.h"
 
 DEFINE_string(server_address, "localhost:50051",
diff --git a/cartographer_ros/cartographer_ros/offline_node_main.cc b/cartographer_ros/cartographer_ros/offline_node_main.cc
index 606448b..845954f 100644
--- a/cartographer_ros/cartographer_ros/offline_node_main.cc
+++ b/cartographer_ros/cartographer_ros/offline_node_main.cc
@@ -17,6 +17,7 @@
 #include "cartographer/mapping/map_builder.h"
 #include "cartographer_ros/offline_node.h"
 #include "cartographer_ros/ros_log_sink.h"
+#include "gflags/gflags.h"
 #include "ros/ros.h"
 
 int main(int argc, char** argv) {