diff --git a/src/sharedptr.rs b/src/sharedptr.rs
index d8fdc5e..115d6c6 100644
--- a/src/sharedptr.rs
+++ b/src/sharedptr.rs
@@ -7,7 +7,7 @@ use std::{
 use crate::allocator::ALLOCATOR;
 
 #[derive(Debug)]
-pub struct SharedPtr<'a, const N: usize>(&'a mut [u8]);
+pub struct SharedPtr<'a, const N: usize>(&'a mut [u8; N]);
 
 impl<const N: usize> SharedPtr<'_, N> {
     pub fn new() -> Option<Self> {
@@ -18,7 +18,7 @@ impl<const N: usize> SharedPtr<'_, N> {
             slice::from_raw_parts_mut(buf, N)
         };
 
-        Some(SharedPtr(buf))
+        Some(SharedPtr(buf.try_into().expect("Should never fail")))
     }
 
     pub fn get_offset(&self) -> usize {
@@ -31,7 +31,7 @@ impl<const N: usize> SharedPtr<'_, N> {
 }
 
 impl<'a, const N: usize> Deref for SharedPtr<'a, N> {
-    type Target = &'a mut [u8];
+    type Target = &'a mut [u8; N];
 
     fn deref(&self) -> &Self::Target {
         &self.0