diff --git a/src/ipv4.rs b/src/ipv4.rs
index 5a55216..c4e4076 100644
--- a/src/ipv4.rs
+++ b/src/ipv4.rs
@@ -61,7 +61,7 @@ pub struct IPv4Range {
 }
 
 impl IPv4Range {
-    pub fn new(from: u32, to: u32, id_ignore: &mut Vec<u32>) -> Self {
+    pub fn new(from: u32, to: u32, id_ignore: Vec<u32>) -> Self {
         let to = to.clamp(0, u32::max_value());
 
         if from >= to {
@@ -71,7 +71,7 @@ impl IPv4Range {
         Self {
             id_start: from,
             id_end: to,
-            id_ignore: id_ignore.to_vec(),
+            id_ignore,
         }
     }
 }
diff --git a/src/scanner.rs b/src/scanner.rs
index 9f4d126..f8ee93f 100644
--- a/src/scanner.rs
+++ b/src/scanner.rs
@@ -41,7 +41,7 @@ fn create_scan_worker(
     thread_id: u32,
     ips_per_thread: u32,
     target_port: u16,
-    ignorelist: &mut Vec<u32>,
+    ignorelist: Vec<u32>,
 ) -> JoinHandle<Vec<bool>> {
     let (f, t) = (
         (thread_id * ips_per_thread),
@@ -67,7 +67,7 @@ fn start_scan(
     let mut threads: Vec<JoinHandle<Vec<bool>>> = Vec::new();
 
     for thread_id in 0..num_threads {
-        let id_ignorelist = ignorelist.unwrap().cloned().unwrap_or_else(Vec::new());
+        let id_ignorelist = ignorelist.clone().unwrap_or_default();
 
         // Create a worker
         let worker = create_scan_worker(thread_id, ips_per_thread, target_port, id_ignorelist);