diff --git a/inc/tcplistener.hpp b/inc/tcplistener.hpp
index 79582cc25f221b5915e8d56be7d5f034d12c2b04..6b8380bbe6531081d96c8d2a72c2ced9f36a8467 100644
--- a/inc/tcplistener.hpp
+++ b/inc/tcplistener.hpp
@@ -139,7 +139,7 @@ public:
      * 
      * @return A clone of this TcpListener that shares the same underlying socket.
      */
-    TcpListener clone();
+    TcpListener clone() const;
 
 };
 
diff --git a/inc/tcpstream.hpp b/inc/tcpstream.hpp
index 72f9af5947aa07a8fc291cfcca285e1e8e435da5..a51b4ad60d9ccedf2c1ead4e1c0c3b02daf3473d 100644
--- a/inc/tcpstream.hpp
+++ b/inc/tcpstream.hpp
@@ -250,7 +250,7 @@ public:
      * 
      * @return A clone of this TcpStream that shares the same underlying socket.
      */
-    TcpStream clone();
+    TcpStream clone() const;
 
     friend class TcpListener;
 
diff --git a/inc/udpsocket.hpp b/inc/udpsocket.hpp
index 6386b022c61b21df7e938c340756246da8816123..e76dfe9409573c611e0e3364ac8844e1f5871abe 100644
--- a/inc/udpsocket.hpp
+++ b/inc/udpsocket.hpp
@@ -236,7 +236,7 @@ public:
      * 
      * @return A clone of this UdpSocket that shares the same underlying socket.
      */
-    UdpSocket clone();
+    UdpSocket clone() const;
 
 };
 
diff --git a/src/tcplistener.cpp b/src/tcplistener.cpp
index dc5262f8ae1654d85762fa46eab49ce017593937..4bda937ae76cd4a639e68c64d9f1451ac153a1ed 100644
--- a/src/tcplistener.cpp
+++ b/src/tcplistener.cpp
@@ -136,7 +136,7 @@ void TcpListener::setAutoclose(bool _autoclose)
     autoclose = _autoclose;
 }
 
-TcpListener TcpListener::clone()
+TcpListener TcpListener::clone() const
 {
     TcpListener other{local};
     other.sockfd = sockfd;
diff --git a/src/tcpstream.cpp b/src/tcpstream.cpp
index 8f6e5fd27a15b44c74b903b7d1849c002264035e..3cd3145d4bec9bf0a341c73ee37efe8f92deff61 100644
--- a/src/tcpstream.cpp
+++ b/src/tcpstream.cpp
@@ -266,7 +266,7 @@ void TcpStream::setAutoclose(bool _autoclose)
     autoclose = _autoclose;
 }
 
-TcpStream TcpStream::clone()
+TcpStream TcpStream::clone() const
 {
     TcpStream other{remote};
     other.sockfd = sockfd;
diff --git a/src/udpsocket.cpp b/src/udpsocket.cpp
index 9ef39b484b157e86d277106580dbf93ad7e5b80c..8137cb6c98345a513699c9fac91783a372d1cd48 100644
--- a/src/udpsocket.cpp
+++ b/src/udpsocket.cpp
@@ -197,7 +197,7 @@ void UdpSocket::setAutoclose(bool _autoclose)
     autoclose = _autoclose;
 }
 
-UdpSocket UdpSocket::clone()
+UdpSocket UdpSocket::clone() const
 {
     UdpSocket other;
     other.local = local;