diff --git a/src/bind.c b/src/bind.c
index babefe4c..c8563e53 100644
--- a/src/bind.c
+++ b/src/bind.c
@@ -47,6 +47,7 @@
 
 
 #ifdef _WIN32
+#include <io.h>
 #include <winsock2.h>
 #include <ws2tcpip.h>