diff --git a/conn_test.go b/conn_test.go
index db7c2ab4..8ce94b3f 100644
--- a/conn_test.go
+++ b/conn_test.go
@@ -1575,10 +1575,10 @@ func TestServerCertificate(t *testing.T) {
 				}()
 
 				cli, err := Client(dtlsnet.PacketConnFromConn(ca), ca.RemoteAddr(), tt.clientCfg)
+				hserr := cli.Handshake()
 				if err == nil {
 					_ = cli.Close()
 				}
-				hserr := cli.Handshake()
 				if !tt.wantErr && (err != nil || hserr != nil) {
 					t.Errorf("Client failed(%v, %v)", err, hserr)
 				}