diff --git a/src/arenas/Battleship/functions.php b/src/arenas/Battleship/functions.php
index d3f6bc0..c8b244e 100644
--- a/src/arenas/Battleship/functions.php
+++ b/src/arenas/Battleship/functions.php
@@ -2,9 +2,8 @@
 function is_it_possible_to_place_ships_on_grid($gridWidth,$gridHeight,$nbShipsSize1,$nbShipsSize2,$nbShipsSize3,$nbShipsSize4,$nbShipsSize5,$nbShipsSize6){
   //return false or true
   //not a perfect solution
-  $shipsArea=$nbShipsSize1 + 2 * $nbShipsSize2 + 3 * $nbShipsSize3 + 4 * $nbShipsSize4 + 5 * $nbShipsSize5 + 6 * $nbShipsSize6;
+  $shipsArea=$nbShipsSize1 + (2 * $nbShipsSize2) + (3 * $nbShipsSize3) + (4 * $nbShipsSize4) + (5 * $nbShipsSize5) + (6 * $nbShipsSize6);
   if( $shipsArea < intval($gridHeight * $gridWidth / 2)){
-    echo "there";
     return false;
   }
   //longest ship