diff --git a/src/editor/actions.rs b/src/editor/actions.rs
index 18537af7a5..2fedf59f93 100644
--- a/src/editor/actions.rs
+++ b/src/editor/actions.rs
@@ -1135,7 +1135,7 @@ impl UndoableAction for PlaceTileAction {
 
             if let Some(layer) = map.layers.get_mut(&self.layer_id) {
                 if let MapLayerKind::TileLayer = layer.kind {
-                    self.replaced_tile = layer.tiles.remove(i as usize);
+                    self.replaced_tile = layer.tiles.remove(i);
 
                     let tile = MapTile {
                         tile_id: self.id,
@@ -1145,7 +1145,7 @@ impl UndoableAction for PlaceTileAction {
                         attributes: vec![],
                     };
 
-                    layer.tiles.insert(i as usize, Some(tile));
+                    layer.tiles.insert(i, Some(tile));
                 } else {
                     return Err(Error::new_const(
                         ErrorKind::EditorAction,
@@ -1173,14 +1173,14 @@ impl UndoableAction for PlaceTileAction {
 
         if let Some(layer) = map.layers.get_mut(&self.layer_id) {
             if let MapLayerKind::TileLayer = layer.kind {
-                if layer.tiles.get(i as usize).is_none() {
+                if layer.tiles.get(i).is_none() {
                     return Err(Error::new_const(ErrorKind::EditorAction, &"PlaceTileAction (Undo): No tile at the specified coords, in the specified layer. Undo was probably called on an action that was never applied"));
                 }
 
                 if let Some(tile) = self.replaced_tile.take() {
-                    layer.tiles[i as usize] = Some(tile);
+                    layer.tiles[i] = Some(tile);
                 } else {
-                    layer.tiles[i as usize] = None;
+                    layer.tiles[i] = None;
                 }
             } else {
                 return Err(Error::new_const(
@@ -1233,7 +1233,7 @@ impl UndoableAction for RemoveTileAction {
 
         if let Some(layer) = map.layers.get_mut(&self.layer_id) {
             if let MapLayerKind::TileLayer = layer.kind {
-                if let Some(tile) = layer.tiles.remove(i as usize) {
+                if let Some(tile) = layer.tiles.remove(i) {
                     self.tile = Some(tile);
 
                     layer.tiles.insert(i, None);
diff --git a/src/gui/select_map.rs b/src/gui/select_map.rs
index 1d120c5c0e..20105d13c0 100644
--- a/src/gui/select_map.rs
+++ b/src/gui/select_map.rs
@@ -186,7 +186,7 @@ pub async fn show_select_map_menu() -> MapResource {
                 }
 
                 let begin = (current_page as usize * entries_per_page).clamp(0, map_cnt);
-                let end = (begin as usize + entries_per_page).clamp(begin, map_cnt);
+                let end = (begin + entries_per_page).clamp(begin, map_cnt);
 
                 for (pi, i) in (begin..end).enumerate() {
                     let map_entry = resources.maps.get(i).unwrap();
diff --git a/src/json/map/tiled.rs b/src/json/map/tiled.rs
index 6144c88a86..6940fc110a 100644
--- a/src/json/map/tiled.rs
+++ b/src/json/map/tiled.rs
@@ -142,7 +142,7 @@ impl TiledMap {
 
             let grid_size = uvec2(
                 tiled_tileset.columns as u32,
-                tiled_tileset.tilecount as u32 / tiled_tileset.columns as u32,
+                tiled_tileset.tilecount / tiled_tileset.columns as u32,
             );
 
             let mut tile_attributes: HashMap<u32, Vec<String>> = HashMap::new();
diff --git a/src/map/mod.rs b/src/map/mod.rs
index 9ef650afd8..5a9682d90c 100644
--- a/src/map/mod.rs
+++ b/src/map/mod.rs
@@ -268,7 +268,7 @@ impl Map {
         let h = texture.height();
 
         let dest_rect = Rect::new(0., 0., w, h);
-        let parallax_w = w as f32 * 0.5;
+        let parallax_w = w * 0.5;
 
         let mut dest_rect2 = Rect::new(
             -parallax_w,
@@ -411,7 +411,7 @@ impl Map {
     }
 
     pub fn get_random_spawn_point(&self) -> Vec2 {
-        let i = rand::gen_range(0, self.spawn_points.len()) as usize;
+        let i = rand::gen_range(0, self.spawn_points.len());
         self.spawn_points[i]
     }
 }