diff --git a/src/graphics/scaling.rs b/src/graphics/scaling.rs
index aea4b19..92de0c0 100644
--- a/src/graphics/scaling.rs
+++ b/src/graphics/scaling.rs
@@ -148,8 +148,8 @@ impl ScreenScaler {
     /// feasible (e.g. 3rd party UI libraries).
     pub fn scale_factor(&self) -> f32 {
         f32::min(
-            self.screen_rect.width as f32 / self.inner_width as f32,
-            self.screen_rect.height as f32 / self.inner_height as f32,
+            self.screen_rect.width / self.inner_width as f32,
+            self.screen_rect.height / self.inner_height as f32,
         )
     }
 
diff --git a/src/platform/device_gl.rs b/src/platform/device_gl.rs
index ce66bf9..c145ec8 100644
--- a/src/platform/device_gl.rs
+++ b/src/platform/device_gl.rs
@@ -1555,7 +1555,7 @@ impl Drop for RawRenderbuffer {
 unsafe fn cast_slice_assume_aligned<A, B>(a: &[A]) -> &[B] {
     slice::from_raw_parts(
         a.as_ptr() as *const B,
-        a.len() * mem::size_of::<A>() / mem::size_of::<B>(),
+        mem::size_of_val(a) / mem::size_of::<B>(),
     )
 }