1 files changed, 5 insertions, 0 deletions

diff --git a/src/Network/BitTorrent/Core/PeerAddr.hs b/src/Network/BitTorrent/Core/PeerAddr.hs
index 261df8d0..9f5c7c5d 100644
--- a/src/Network/BitTorrent/Core/PeerAddr.hs
+++ b/src/Network/BitTorrent/Core/PeerAddr.hs
@@ -38,6 +38,7 @@ import Data.BEncode.BDict (BKey)
 import Data.ByteString.Char8 as BS8
 import Data.Char
 import Data.Default
+import Data.Hashable
 import Data.HashMap.Strict as HM
 import Data.IP
 import Data.List      as L
@@ -81,6 +82,10 @@ instance Serialize PortNumber where
   put = putWord16be . fromIntegral
   {-# INLINE put #-}
 
+instance Hashable PortNumber where
+  hashWithSalt s = hashWithSalt s . fromEnum
+  {-# INLINE hashWithSalt #-}
+
 {-----------------------------------------------------------------------
 --  IP addr
 -----------------------------------------------------------------------}