diff --git a/tests/data_files/Readme-x509.txt b/tests/data_files/Readme-x509.txt
index 2077f3a..b68ae51 100644
--- a/tests/data_files/Readme-x509.txt
+++ b/tests/data_files/Readme-x509.txt
@@ -72,7 +72,7 @@
 
 Signing CA in parentheses (same meaning as certificates).
 
-- crl-ec-sha*: (2) server6.crt
+- crl-ec-sha*.pem: (2) server6.crt
 - crl-future.pem: (2) server6.crt + unknown
 - crl-rsa-pss-*.pem: (1) server9{,badsign,with-ca}.crt + cert_sha384.crt + unknown
 - crl.pem, crl_expired.pem: (1) server1{,.cert_type,.key_usage,.v1}.crt + unknown