diff --git a/src/networking/ip.rs b/src/networking/ip.rs
index af6bf88..e8c2b76 100644
--- a/src/networking/ip.rs
+++ b/src/networking/ip.rs
@@ -163,7 +163,7 @@ mod tests {
     // an IPv4 Address
     fn arr_to_ipaddr() {
         use super::*;
-        let mut ip_addr: [u8; 4] = [127, 0, 0, 1];
+        let ip_addr: [u8; 4] = [127, 0, 0, 1];
         assert_eq!(IpAddr::from_arr(&ip_addr).unwrap(), IpAddr::V4(127, 0, 0, 1));
     }
 }
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