Index: b/src/crlcache.c
===================================================================
--- b/src/crlcache.c
+++ b/src/crlcache.c
@@ -1338,7 +1338,7 @@
       n = cdb_datalen (cdb);
       if (n != 16)
         {
-          log_error (_("WARNING: invalid cache record length for S/N "));
+          log_error (_("WARNING: invalid cache record length for S/N 0x"));
           log_printhex ("", sn, snlen);
         }
       else if (opt.verbose)
@@ -1347,10 +1347,10 @@
           char *tmp = hexify_data (sn, snlen);
 
           if (cdb_read (cdb, record, n, cdb_datapos (cdb)))
-            log_error (_("problem reading cache record for S/N %s: %s\n"),
+            log_error (_("problem reading cache record for S/N 0x%s: %s\n"),
                        tmp, strerror (errno));
           else
-            log_info (_("S/N %s is not valid; reason=%02X  date=%.15s\n"),
+            log_info (_("S/N 0x%s is not valid; reason=%02X  date=%.15s\n"),
                       tmp, *record, record+1);
           xfree (tmp);
         }
@@ -1361,7 +1361,7 @@
       if (opt.verbose)
         {
           char *serialno = hexify_data (sn, snlen);
-          log_info (_("S/N %s is valid, it is not listed in the CRL\n"),
+          log_info (_("S/N 0x%s is valid, it is not listed in the CRL\n"),
                     serialno );
           xfree (serialno);
         }