diff --git a/br/pkg/lightning/common/retry_test.go b/br/pkg/lightning/common/retry_test.go
index 397a028c765ab..b86685136ef17 100644
--- a/br/pkg/lightning/common/retry_test.go
+++ b/br/pkg/lightning/common/retry_test.go
@@ -39,7 +39,7 @@ func TestIsRetryableError(t *testing.T) {
 	require.True(t, IsRetryableError(ErrWriteTooSlow))
 	require.False(t, IsRetryableError(io.EOF))
 	require.False(t, IsRetryableError(&net.AddrError{}))
-	require.False(t, IsRetryableError(&net.DNSError{}))
+	require.True(t, IsRetryableError(&net.DNSError{}))
 	require.True(t, IsRetryableError(&net.DNSError{IsTimeout: true}))
 
 	// kv errors