diff --git a/proxy/wireguard/client.go b/proxy/wireguard/client.go
index 345581c7..9de24360 100644
--- a/proxy/wireguard/client.go
+++ b/proxy/wireguard/client.go
@@ -129,7 +129,8 @@ func (h *Handler) processWireGuard(ctx context.Context, dialer internet.Dialer)
 	}
 	defer func() {
 		if err != nil {
-			_ = h.bind.Close()
+			h.bind.Close()
+			h.bind = nil
 		}
 	}()