diff --git a/Makefile b/Makefile
index c8c87d6..f3dac9f 100644
--- a/Makefile
+++ b/Makefile
@@ -6,4 +6,7 @@ build-linux:
 
 build-win:
 	cargo build --release --target x86_64-pc-windows-gnu --package zsdiff_all --bin zspatch
-	cargo build --release --target x86_64-pc-windows-gnu --package zsdiff_all --bin zsdiff
\ No newline at end of file
+	cargo build --release --target x86_64-pc-windows-gnu --package zsdiff_all --bin zsdiff
+
+clean:
+	rm -Rf target/
\ No newline at end of file
diff --git a/src/utils.rs b/src/utils.rs
index 452f4d3..3ca3644 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -1,4 +1,3 @@
-use crate::utils;
 use md5;
 use rsa::pkcs1::{DecodeRsaPrivateKey, EncodeRsaPrivateKey, EncodeRsaPublicKey};
 use rsa::pkcs8::LineEnding;
@@ -179,7 +178,6 @@ impl Compressor {
 pub struct Encrypter {
     private_key: RsaPrivateKey,
     public_key: RsaPublicKey,
-    key_size: usize,
 }
 impl Encrypter {
     pub fn new_pair() -> Self {
@@ -190,14 +188,12 @@ impl Encrypter {
         Self {
             private_key,
             public_key,
-            key_size: bits,
         }
     }
 
     pub fn from_private_key(private_key: RsaPrivateKey) -> Self {
         let public_key = RsaPublicKey::from(&private_key);
         Self {
-            key_size: public_key.size(),
             public_key,
             private_key,
         }
@@ -205,7 +201,6 @@ impl Encrypter {
 
     pub fn new(private_key: RsaPrivateKey, public_key: RsaPublicKey) -> Self {
         Self {
-            key_size: public_key.size(),
             private_key,
             public_key,
         }
@@ -220,7 +215,7 @@ impl Encrypter {
             let segment = self
                 .public_key
                 .encrypt(&mut rng, Pkcs1v15Encrypt, seg)
-                .unwrap();
+                .expect("Can't encrypt segment");
             out.extend(segment)
         }
         Ok(out)
diff --git a/src/zsdiff.rs b/src/zsdiff.rs
index 5277eec..fb4d8f7 100644
--- a/src/zsdiff.rs
+++ b/src/zsdiff.rs
@@ -2,7 +2,6 @@ mod utils;
 
 use clap::Parser;
 use std::collections::HashMap;
-use std::fmt::format;
 use std::io::Write;
 use std::{fs, io, time};
 use utils::{Metadata, Zsdiff, get_hash};
diff --git a/src/zspatch.rs b/src/zspatch.rs
index 700d1e6..add3ffc 100644
--- a/src/zspatch.rs
+++ b/src/zspatch.rs
@@ -1,7 +1,7 @@
 mod utils;
 
 use crate::utils::Metadata;
-use clap::{Arg, ArgAction, ArgMatches, Command, Parser};
+use clap::{Arg, ArgAction, Command, Parser};
 use std::path::{Path, PathBuf};
 use std::{io, time};
 use tokio::fs;
@@ -177,18 +177,6 @@ async fn zspatch(filename: String, dest_dir: String) -> Result<(), io::Error> {
     Ok(())
 }
 
-#[derive(Parser)]
-struct Args {
-    #[arg(short, long)]
-    filename: String,
-    #[arg(short, long)]
-    dest_dir: String,
-    #[arg(short, long)]
-    metadata: bool,
-    #[arg(short, long)]
-    check_hash: bool,
-}
-
 #[tokio::main]
 async fn main() -> io::Result<()> {
     let m = Command::new("ZsPatch")
@@ -216,12 +204,14 @@ async fn main() -> io::Result<()> {
                 .arg(
                     Arg::new("filename")
                         .short('f')
+                        .long("filename")
                         .required(true)
                         .action(ArgAction::Set),
                 )
                 .arg(
                     Arg::new("dest")
                         .short('d')
+                        .long("dest")
                         .required(true)
                         .action(ArgAction::Set),
                 )
@@ -256,20 +246,4 @@ async fn main() -> io::Result<()> {
         _ => unreachable!("Subcommand is required"),
     }
     Ok(())
-
-    // let args = Args::parse();
-    //
-    // let filename = args.filename.clone();
-    // let dest_dir = args.dest_dir.clone();
-    //
-    // if args.check_hash {
-    //     check_hash(args.filename.clone()).await.ok();
-    // }
-    // if args.metadata {
-    //     let diff = load_file(filename).await?;
-    //     let metadata = diff.metadata;
-    //     println!(">>> Compress level: {}", metadata.compress_level);
-    //     return Ok(());
-    // }
-    // zspatch(filename, dest_dir).await
 }