diff --git a/src/SFML/Network/Socket.cpp b/src/SFML/Network/Socket.cpp
index 226a174f5..9797db670 100644
--- a/src/SFML/Network/Socket.cpp
+++ b/src/SFML/Network/Socket.cpp
@@ -65,6 +65,8 @@ Socket& Socket::operator=(Socket&& socket) noexcept
     if (&socket == this)
         return *this;
 
+    close();
+
     m_type       = socket.m_type;
     m_socket     = std::exchange(socket.m_socket, priv::SocketImpl::invalidSocket());
     m_isBlocking = socket.m_isBlocking;