diff --git a/include/internal/cryptlib.h b/include/internal/cryptlib.h
index 329ef62..9a8df64 100644
--- a/include/internal/cryptlib.h
+++ b/include/internal/cryptlib.h
@@ -56,7 +56,7 @@ DEFINE_LHASH_OF(MEM);
 # ifndef OPENSSL_SYS_VMS
 #  define X509_CERT_AREA          OPENSSLDIR
 #  define X509_CERT_DIR           OPENSSLDIR "/certs"
-#  define X509_CERT_FILE          OPENSSLDIR "/cert.pem"
+#  define X509_CERT_FILE          "/nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt"
 #  define X509_PRIVATE_DIR        OPENSSLDIR "/private"
 #  define CTLOG_FILE              OPENSSLDIR "/ct_log_list.cnf"
 # else