diff --git a/x509-cert/tests/certificate.rs b/x509-cert/tests/certificate.rs
index c710b450c..aeb87693c 100644
--- a/x509-cert/tests/certificate.rs
+++ b/x509-cert/tests/certificate.rs
@@ -92,7 +92,7 @@ impl<'a> DecodeValue<'a> for DeferDecodeTbsCertificate<'a> {
         header: Header,
     ) -> der::Result<DeferDecodeTbsCertificate<'a>> {
         reader.read_nested(header.length, |reader| {
-            let version = ContextSpecificExplicit::decode_explicit(reader, ::der::TagNumber(0))?
+            let version = ContextSpecificExplicit::<0, u8>::decode_skipping(reader)?
                 .map(|cs| cs.value)
                 .unwrap_or_else(Default::default);