diff --git a/lib/isc/include/isc/netmgr.h b/lib/isc/include/isc/netmgr.h
index 3a4905698b..14b8b2b648 100644
--- a/lib/isc/include/isc/netmgr.h
+++ b/lib/isc/include/isc/netmgr.h
@@ -12,17 +12,19 @@
 #pragma once
 
 #include <isc/mem.h>
+#include <isc/region.h>
 #include <isc/result.h>
 #include <isc/types.h>
 
+/*
+ * Replacement for isc_sockettype_t provided by socket.h.
+ */
 typedef enum {
-	NMEV_READ,
-	NMEV_WRITE,
-	NMEV_ACCEPT,
-	NMEV_CONNECTED,
-	NMEV_CANCELLED,
-	NMEV_SHUTDOWN
-} isc_nm_eventtype;
+	isc_socktype_tcp = 1,
+	isc_socktype_udp = 2,
+	isc_socktype_unix = 3,
+	isc_socktype_raw = 4
+} isc_socktype_t;
 
 typedef void (*isc_nm_recv_cb_t)(isc_nmhandle_t *handle, isc_result_t eresult,
 				 isc_region_t *region, void *cbarg);
diff --git a/lib/isc/win32/libisc.def.in b/lib/isc/win32/libisc.def.in
index 2965723660..d51ce4570e 100644
--- a/lib/isc/win32/libisc.def.in
+++ b/lib/isc/win32/libisc.def.in
@@ -458,8 +458,10 @@ isc_nm_closedown
 isc_nm_destroy
 isc_nm_detach
 isc_nm_listentcpdns
+isc_nm_listentcp
 isc_nm_listenudp
 isc_nm_maxudp
+isc_nm_read
 isc_nm_send
 isc_nm_setstats
 isc_nm_start