diff --git a/agb/src/display/tiled/map.rs b/agb/src/display/tiled/map.rs
index 9abe79a8..c094e966 100644
--- a/agb/src/display/tiled/map.rs
+++ b/agb/src/display/tiled/map.rs
@@ -40,7 +40,7 @@ trait TiledMapPrivate: TiledMapTypes {
         unsafe { MemoryMapped::new(0x0400_0008 + 2 * self.background_id()) }
     }
     fn screenblock_memory(&self) -> *mut u16 {
-        (0x0600_0000 + 0x1000 * self.screenblock() as usize / 2) as *mut u16
+        (0x0600_0000 + 0x1000 * self.screenblock() / 2) as *mut u16
     }
 }
 
diff --git a/agb/src/display/tiled/vram_manager.rs b/agb/src/display/tiled/vram_manager.rs
index 6b3dbf43..3464f54e 100644
--- a/agb/src/display/tiled/vram_manager.rs
+++ b/agb/src/display/tiled/vram_manager.rs
@@ -333,7 +333,7 @@ impl VRamManager {
 
     pub(crate) fn gc(&mut self) {
         for tile_index in self.indices_to_gc.drain(..) {
-            let key = tile_index.refcount_key() as usize;
+            let key = tile_index.refcount_key();
             if self.reference_counts[key].current_count() > 0 {
                 continue; // it has since been added back
             }