diff --git a/rpc/client.go b/rpc/client.go
index 1ceb48e..1400359 100644
--- a/rpc/client.go
+++ b/rpc/client.go
@@ -1141,6 +1141,7 @@ func (client *Client) Close() {
 		}
 		if client.s != nil {
 			client.s.Close()
+			client.s = nil
 		}
 	})
 	if timeout == nil && doCleanup {