1 files changed, 2 insertions, 0 deletions
diff --git a/ext/socket/socket.c b/ext/socket/socket.c
index df14c0c443..19a3f2aa17 100644
--- a/ext/socket/socket.c
+++ b/ext/socket/socket.c
@@ -888,6 +888,8 @@ open_inet_internal(arg)
 	rb_sys_fail(syscall);
     }
 
+    arg->fd = -1;
+
     if (type == INET_SERVER)
 	listen(fd, 5);