diff --git a/modes/Tunnel.cc b/modes/Tunnel.cc
index e3e9d5c..c8840b1 100644
--- a/modes/Tunnel.cc
+++ b/modes/Tunnel.cc
@@ -19,7 +19,7 @@ using namespace std;
 #define RING_LAYER_DIST 10
 #define XLATE_RATE 0.02
 #define REVOLUTION_TIME 15000
-#define DESTROY_DIST 200
+#define DESTROY_DIST 260
 #define BREAK_RATE 0.03
 
 Tunnel::Tunnel()