diff --git a/velocity_safety_no_formulas.prism b/velocity_safety_no_formulas.prism
index e49d30a..f7f5985 100644
--- a/velocity_safety_no_formulas.prism
+++ b/velocity_safety_no_formulas.prism
@@ -3,7 +3,8 @@ mdp
 const int initY = 40;
 const int initX = 80;
 
-const int maxY = 580;
+//const int maxY = 580;
+const int maxY = 220;
 const int minX = 10;
 const int maxX = 144;
 
@@ -33,9 +34,9 @@ module skier
   done : bool ;
 
 
-  [left]  !Safe & !Unsafe & move=0 & ski_position>1 -> (ski_position'=ski_position-1) & (move'=1) & (done'=(Hit_Tree|Hit_Gate));
-  [right] !Safe & !Unsafe & move=0 & ski_position<8 -> (ski_position'=ski_position+1) & (move'=1) & (done'=(Hit_Tree|Hit_Gate));
-  [noop]  !Safe & !Unsafe & move=0 -> (move'=1) & (done'=(Hit_Tree|Hit_Gate));
+  [left]  !Safe & !Unsafe & !done & move=0 & ski_position>1 -> (ski_position'=ski_position-1) & (move'=1) & (done'=(Hit_Tree|Hit_Gate));
+  [right] !Safe & !Unsafe & !done & move=0 & ski_position<8 -> (ski_position'=ski_position+1) & (move'=1) & (done'=(Hit_Tree|Hit_Gate));
+  [noop]  !Safe & !Unsafe & !done & move=0 -> (move'=1) & (done'=(Hit_Tree|Hit_Gate));
 
 
   [done] Safe | Unsafe | done -> true;