diff --git a/bitcoin/src/p2p/mod.rs b/bitcoin/src/p2p/mod.rs
index 3d8709fa..8a3147c7 100644
--- a/bitcoin/src/p2p/mod.rs
+++ b/bitcoin/src/p2p/mod.rs
@@ -28,6 +28,7 @@ use internals::{debug_from_display, write_err};
 use io::{BufRead, Write};
 
 use crate::consensus::encode::{self, Decodable, Encodable};
+use crate::consensus::Params;
 use crate::prelude::*;
 use crate::Network;
 
@@ -226,6 +227,11 @@ impl Magic {
 
     /// Get network magic bytes.
     pub fn to_bytes(self) -> [u8; 4] { self.0 }
+
+    /// Returns the magic bytes for the network defined by `params`.
+    pub fn from_params(params: impl AsRef<Params>) -> Self {
+        params.as_ref().network.into()
+    }
 }
 
 impl FromStr for Magic {