diff --git a/src/lib.rs b/src/lib.rs
index 60762a2..52f0f64 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -44,10 +44,8 @@ impl Drop for SmallInt {
     fn drop(&mut self) {
         if let Self::Heap((r, s)) = self {
             let size = usize::try_from(s.abs()).unwrap();
-            let mut slice = unsafe { core::slice::from_raw_parts(r, size) };
-            unsafe {
-                core::ptr::drop_in_place(&mut slice);
-            }
+            let slice = unsafe { core::slice::from_raw_parts_mut(*r, size) };
+            unsafe { std::mem::drop(Box::from_raw(slice)) }
         }
     }
 
@@ -96,7 +94,7 @@ impl From<u128> for SmallInt {
                 while v != 0 {
                     vec.push(v as u32);
 
-                    v = (v >> 1) >> (32 - 1);
+                    v >>= 32;
                 }
                 let mut slice = ManuallyDrop::new(vec.into_boxed_slice());
                 SmallInt::Heap((slice.as_mut_ptr(), isize::try_from(slice.len()).unwrap()))