diff --git a/internal/artifact/reader_test.go b/internal/artifact/reader_test.go
index 106a8da..442e811 100644
--- a/internal/artifact/reader_test.go
+++ b/internal/artifact/reader_test.go
@@ -46,8 +46,8 @@ func TestCompositeReader_Read(t *testing.T) {
 
 	t.Run("unsupported ref type", func(t *testing.T) {
 		ref := domain.ArtifactRef{
-			Type: domain.ArtifactRefType("s3"),
-			URI:  "s3://bucket/key",
+			Type: domain.ArtifactRefType("unsupported"),
+			URI:  "unsupported://bucket/key",
 		}
 		_, err := reader.Read(ctx, ref)
 		if !errors.Is(err, ErrUnsupportedRefType) {