diff --git a/src/xrt/drivers/realsense/rs_6dof.c b/src/xrt/drivers/realsense/rs_6dof.c
index c568d2e0a..1707369eb 100644
--- a/src/xrt/drivers/realsense/rs_6dof.c
+++ b/src/xrt/drivers/realsense/rs_6dof.c
@@ -380,6 +380,8 @@ load_config(struct rs_6dof *rs)
 		rs->enable_pose_filtering = cJSON_IsTrue(pose_filtering);
 	}
 
+	cJSON_Delete(config_json.root);
+
 	return true;
 }