diff --git a/src/net/fd_windows.go b/src/net/fd_windows.go
index 40b4aa1d7a..a976f2ac7f 100644
--- a/src/net/fd_windows.go
+++ b/src/net/fd_windows.go
@@ -118,7 +118,7 @@ func (o *operation) InitBufs(buf *Buffers) {
 		if len(b) > 0 {
 			p = &b[0]
 		}
-		o.bufs = append(o.bufs, syscall.WSABuf{uint32(len(b)), p})
+		o.bufs = append(o.bufs, syscall.WSABuf{Len: uint32(len(b)), Buf: p})
 	}
 }