diff --git a/checker/tls_related_test.go b/checker/tls_related_test.go
index dbd3a46..1a187d7 100644
--- a/checker/tls_related_test.go
+++ b/checker/tls_related_test.go
@@ -136,6 +136,7 @@ func (s *stubReportCtx) Data() json.RawMessage { return s.data }
 func (s *stubReportCtx) Related(_ sdk.ObservationKey) []sdk.RelatedObservation {
 	return s.related
 }
+func (s *stubReportCtx) States() []sdk.CheckState { return nil }
 
 func mustJSON(t *testing.T, v any) json.RawMessage {
 	t.Helper()