diff --git a/src/main/rust/src/implementations/libraries.rs b/src/main/rust/src/implementations/libraries.rs
index f33b3e7..eef6256 100644
--- a/src/main/rust/src/implementations/libraries.rs
+++ b/src/main/rust/src/implementations/libraries.rs
@@ -2,6 +2,7 @@ use crate::models::station_measurements::StationMeasurements;
 use crate::utils::{hash, parse};
 use memmap2::MmapOptions;
 use rustc_hash::{FxBuildHasher, FxHashMap as HashMap};
+use std::slice::from_raw_parts;
 use std::sync::mpsc;
 use std::time::Instant;
 use std::{fs::File, thread};
@@ -13,6 +14,7 @@ pub fn run() {
     const FILE_PATH: &str = "../../../measurements.txt";
     let file = File::open(FILE_PATH).expect("File measurements.txt not found");
     let mmap = unsafe { MmapOptions::new().map(&file).unwrap() };
+    let mmap_ptr = mmap.as_ptr();
     let file_length = mmap.len();
     let hasher = FxBuildHasher;
     let mut stations: HashMap<u64, (String, StationMeasurements)> =
@@ -39,7 +41,7 @@ pub fn run() {
         for i in 0..cores {
             let tx = tx.clone();
             let (start, end) = *bounds.get(i).unwrap();
-            let mmap_slice = &mmap[start..end];
+            let mmap_slice = unsafe { from_raw_parts(mmap_ptr.add(start), end - start) };
             s.spawn(move || {
                 let mut t_stations: HashMap<u64, (String, StationMeasurements)> =
                     HashMap::with_capacity_and_hasher(DEFAULT_HASHMAP_LENGTH, hasher);