diff --git a/include/rtabmap_ros/OdometryROS.h b/include/rtabmap_ros/OdometryROS.h
index f674f0c8..941e056b 100644
--- a/include/rtabmap_ros/OdometryROS.h
+++ b/include/rtabmap_ros/OdometryROS.h
@@ -95,6 +95,7 @@ private:
 	std::string frameId_;
 	std::string odomFrameId_;
 	std::string groundTruthFrameId_;
+	std::string groundTruthBaseFrameId_;
 	std::string guessFrameId_;
 	bool publishTf_;
 	bool waitForTransform_;