1 files changed, 3 insertions, 1 deletions
diff --git a/socket.c b/socket.c
index f6319ca..1b0b26e 100644
--- a/socket.c
+++ b/socket.c
@@ -718,7 +718,9 @@ struct socket *tcp_listen(Slirp *slirp, uint32_t haddr, u_int hport,
         (listen(s, 1) < 0)) {
         int tmperrno = errno; /* Don't clobber the real reason we failed */
 
-        close(s);
+        if (s >= 0) {
+            closesocket(s);
+        }
         sofree(so);
         /* Restore the real errno */
 #ifdef _WIN32