diff --git a/nlsr.h b/nlsr.h
index 7a57c9f..a914880 100644
--- a/nlsr.h
+++ b/nlsr.h
@@ -78,6 +78,7 @@
 	long int lsa_refresh_time;
 	long int router_dead_interval;
 	long int multi_path_face_num;
+	char *logDir;
 
 	int semaphor;