diff --git a/nlsr-sync-0.0/nlsr.h b/nlsr-sync-0.0/nlsr.h
index 1155688..b1b279f 100755
--- a/nlsr-sync-0.0/nlsr.h
+++ b/nlsr-sync-0.0/nlsr.h
@@ -105,6 +105,8 @@
 	int is_hyperbolic_calc;
 	double cor_r;
 	double cor_theta;
+
+	int tunnel_type;
 	
 	
 };