diff --git a/src/main.rs b/src/main.rs
index 1787e72..60c6b0b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -111,8 +111,9 @@ impl Buffer {
         // sprite in a box of 7 * 7 tiles
         // vertical offset = 7 - height
         // horizontal offset = ((7 - width) / 2) + (1/2) -> then round the result down
-        self.vertical_offset = if width > MAX_SPRITE_SIZE {255 - width} else {MAX_SPRITE_SIZE - width};
-        let res = (((MAX_SPRITE_SIZE as f32 - height as f32) / 2.0) + (1.0 / 2.0)) as f32;
+        self.vertical_offset = if width > MAX_SPRITE_SIZE {255 - width + MAX_SPRITE_SIZE} else {MAX_SPRITE_SIZE - width};
+        let height_substraction: u8 = if width > MAX_SPRITE_SIZE {255 - height + MAX_SPRITE_SIZE} else {MAX_SPRITE_SIZE - height};
+        let res = ((height_substraction as f32 / 2.0) + (1.0 / 2.0)) as f32;
         self.horizontal_offset = res.floor() as u8;
         // We need 3 bitplanes, the first and second ones are where the 
         // decompressed bytes will be, which are 7 x 7 each.