diff --git a/src/voc.rs b/src/voc.rs
index 91452c0..e7c853a 100644
--- a/src/voc.rs
+++ b/src/voc.rs
@@ -1,5 +1,3 @@
-#![allow(clippy::new_without_default)]
-
 use std::fs::File;
 use std::io::{Read, Seek, Write};
 
@@ -18,6 +16,10 @@ impl VocFile {
     const SIGNATURE1: &'static str = "Creative Voice File";
     const SIGNATURE2: [u8; 3] = [0x1A, 0x1A, 0x0];
 
+    fn checksum(version: i16) -> [u8; 2] {
+        (!version + 0x1234).to_le_bytes()
+    }
+
     pub fn from_file(file_name: &str) -> Self {
         let mut file = File::open(file_name).unwrap();
 
@@ -45,8 +47,7 @@ impl VocFile {
         // Version checksum
         let mut checksum_buffer: [u8; 2] = [0; 2];
         drop(file.read(&mut checksum_buffer));
-        let checksum = (!version_int + 0x1234).to_le_bytes();
-        let checksum_result = checksum_buffer == checksum;
+        let checksum_result = checksum_buffer == Self::checksum(version_int);
 
         let mut voc_file = VocFile { version, checksum: checksum_result, blocks: Vec::new() };
 
@@ -136,8 +137,7 @@ impl VocFile {
 
         // Version Checksum
         let version_int = i16::from_le_bytes([self.version.1, self.version.0]);
-        let checksum = (!version_int + 0x1234).to_le_bytes();
-        result.extend_from_slice(&checksum);
+        result.extend_from_slice(&Self::checksum(version_int));
 
         // Iterate Blocks
         for block in &self.blocks {