diff --git a/src/net/socket/tcp_socket_posix.cc b/src/net/socket/tcp_socket_posix.cc
index b7758c29b4..730d21b4ec 100644
--- a/src/net/socket/tcp_socket_posix.cc
+++ b/src/net/socket/tcp_socket_posix.cc
@@ -388,15 +388,15 @@ int TCPSocketPosix::GetPeerAddress(IPEndPoint* address) const {
 int TCPSocketPosix::SetDefaultOptionsForServer() {
   DCHECK(socket_);
 
-#if BUILDFLAG(IS_LINUX)
+#ifdef SO_REUSEPORT
   int reuseport = 1;
   int rv =
       setsockopt(socket_->socket_fd(), SOL_SOCKET, SO_REUSEPORT,
                  reinterpret_cast<const char*>(&reuseport), sizeof(reuseport));
-  if (rv < 0) {
+  // Ignore errors that the option does not exist.
+  if (rv != 0 && errno != ENOPROTOOPT)
     return MapSystemError(errno);
-  }
-#endif
+#endif  // SO_REUSEPORT
 
   return AllowAddressReuse();
 }