diff --git a/world.h b/world.h
index 2760376..7996644 100644
--- a/world.h
+++ b/world.h
@@ -3,7 +3,7 @@
 
 struct world {
 	const static int newborn_energy = 500;
-	const static int move_cost = -10;
+	const static int move_cost = -5;
 	const static int attack_cost = -40;
 	const static int defense_cost = -20;
 	const static int sun_energy = 1;