diff --git a/src/search_algoritms/a_star.py b/src/search_algoritms/a_star.py
index 47c7e14..b972fc4 100644
--- a/src/search_algoritms/a_star.py
+++ b/src/search_algoritms/a_star.py
@@ -6,7 +6,7 @@ from tile import Tile
 from .helpers import successor, get_path_actions
 
 
-def a_star(field: List[List[Tile]], start_x: int, start_y: int, start_direction: int, goal):
+def a_star(field: List[List[Tile]], start_x: int, start_y: int, start_direction: int, goal: Tuple[int, int]):
     explored = []
     node_queue: List[Tuple[int, Node]] = [(1, Node(start_x, start_y, start_direction))]
     # do kolejki dodawać krotke (priorytet, obiekt)