diff --git a/src/game.rs b/src/game.rs
index 75bb119..f7729f4 100644
--- a/src/game.rs
+++ b/src/game.rs
@@ -192,7 +192,7 @@ impl Game {
                         0,
                         format!("you hit {} for {} damage.", m.get_name(), player_dmg).to_string(),
                     );
-                    let monster_dmg =m.damage().saturating_sub(self.player.defense());
+                    let monster_dmg = m.damage().saturating_sub(self.player.defense());
                     self.player.change_life(-(monster_dmg as i16));
 
                     self.messages.insert(
diff --git a/src/level.rs b/src/level.rs
index 8189438..01a2065 100644
--- a/src/level.rs
+++ b/src/level.rs
@@ -147,7 +147,9 @@ impl Level {
                     if player.get_immutable_position().get_x() == new_x
                         && player.get_immutable_position().get_y() == new_y
                     {
-                        let monster_dmg =self.monsters[index].damage().saturating_sub(player.defense());
+                        let monster_dmg = self.monsters[index]
+                            .damage()
+                            .saturating_sub(player.defense());
                         player.change_life(-(monster_dmg as i16));
                         if player.is_dead() {
                             messages.insert(
@@ -172,7 +174,9 @@ impl Level {
                             // player not dead => monster can occupy new position
                             self.monsters[index].get_position().change(-dx, -dy);
                             // player fights back
-                            let player_dmg = player.damage().saturating_sub(self.monsters[index].defense());
+                            let player_dmg = player
+                                .damage()
+                                .saturating_sub(self.monsters[index].defense());
                             self.monsters[index].decrease_life(player_dmg);
                             if self.monsters[index].is_dead() {
                                 let level_up: bool = player