diff --git a/astar.py b/astar.py
index 834c2ee..2b30eaf 100644
--- a/astar.py
+++ b/astar.py
@@ -17,9 +17,9 @@ def astar(istate, goalx, goaly, passedFields):
             return steps
 
         element = successors(state, passedFields, goalx, goaly)
-        explored.add((state.xpos, state.ypos, state.orientation, state.priority))
+        explored.add((state.xpos, state.ypos, state.orientation))
         for value in element:
-            val = (value.xpos, value.ypos, value.orientation, value.priority)
+            val = (value.xpos, value.ypos, value.orientation)
             if val in explored:
                 continue 
             cost = state.priority + value.priority