diff --git a/crates/udp/src/swarm.rs b/crates/udp/src/swarm.rs
index 4e4ac13..4eb04ad 100644
--- a/crates/udp/src/swarm.rs
+++ b/crates/udp/src/swarm.rs
@@ -184,12 +184,11 @@ impl TorrentMaps {
                     let mut t = 0;
                     let mut f = File::open(path)?;
                     loop {
-                        let mut b = vec![0; L];
-                        let l = f.read(&mut b)?;
-                        if l != L {
+                        let mut b = [0; L];
+                        if f.read(&mut b)? != L {
                             break;
                         }
-                        if !info_hashes.iter().any(|i| i.0 == b[..l]) {
+                        if !info_hashes.iter().any(|i| i.0 == b) {
                             return Ok(false);
                         }
                         t += 1