diff --git a/lib/isc/netmgr/netmgr-int.h b/lib/isc/netmgr/netmgr-int.h
index f54f590f89..c6a0da0a72 100644
--- a/lib/isc/netmgr/netmgr-int.h
+++ b/lib/isc/netmgr/netmgr-int.h
@@ -53,7 +53,7 @@
 #endif
 
 #if defined(SO_REUSEPORT_LB) || (defined(SO_REUSEPORT) && defined(__linux__))
-#define HAVE_REUSEPORT_LB 1
+#define HAVE_SO_REUSEPORT_LB 1
 #endif
 
 /*
diff --git a/lib/isc/netmgr/tcp.c b/lib/isc/netmgr/tcp.c
index 5dc121f655..24f43c9856 100644
--- a/lib/isc/netmgr/tcp.c
+++ b/lib/isc/netmgr/tcp.c
@@ -406,7 +406,9 @@ isc_nm_listentcp(isc_nm_t *mgr, isc_nmiface_t *iface,
 	isc_nmsocket_t *sock = NULL;
 	sa_family_t sa_family = iface->addr.type.sa.sa_family;
 	size_t children_size = 0;
+#if !HAVE_SO_REUSEPORT_LB && !defined(WIN32)
 	uv_os_sock_t fd = -1;
+#endif
 
 	REQUIRE(VALID_NM(mgr));
 
diff --git a/lib/isc/netmgr/tcpdns.c b/lib/isc/netmgr/tcpdns.c
index f52cbca3e9..1372b63573 100644
--- a/lib/isc/netmgr/tcpdns.c
+++ b/lib/isc/netmgr/tcpdns.c
@@ -450,7 +450,9 @@ isc_nm_listentcpdns(isc_nm_t *mgr, isc_nmiface_t *iface,
 	isc_nmsocket_t *sock = NULL;
 	sa_family_t sa_family = iface->addr.type.sa.sa_family;
 	size_t children_size = 0;
+#if !HAVE_SO_REUSEPORT_LB && !defined(WIN32)
 	uv_os_sock_t fd = -1;
+#endif
 
 	REQUIRE(VALID_NM(mgr));
 
diff --git a/lib/isc/netmgr/udp.c b/lib/isc/netmgr/udp.c
index f69f6feb19..411b8deacf 100644
--- a/lib/isc/netmgr/udp.c
+++ b/lib/isc/netmgr/udp.c
@@ -106,7 +106,9 @@ isc_nm_listenudp(isc_nm_t *mgr, isc_nmiface_t *iface, isc_nm_recv_cb_t cb,
 	isc_nmsocket_t *sock = NULL;
 	sa_family_t sa_family = iface->addr.type.sa.sa_family;
 	size_t children_size = 0;
+#if !HAVE_SO_REUSEPORT_LB && !defined(WIN32)
 	uv_os_sock_t fd = -1;
+#endif
 
 	REQUIRE(VALID_NM(mgr));
 
@@ -269,7 +271,7 @@ isc__nm_async_udplisten(isc__networker_t *worker, isc__netievent_t *ev0) {
 		uv_bind_flags |= UV_UDP_IPV6ONLY;
 	}
 
-#if HAVE_SO_REUSEPORT_LB || WIN32
+#if HAVE_SO_REUSEPORT_LB || defined(WIN32)
 	r = isc_uv_udp_freebind(&sock->uv_handle.udp,
 				&sock->parent->iface->addr.type.sa,
 				uv_bind_flags);