diff -urNp a/snmplib/snmp_logging.c b/snmplib/snmp_logging.c
--- a/snmplib/snmp_logging.c 2023-02-15 10:19:15.691827254 +0100
+++ b/snmplib/snmp_logging.c 2023-02-15 10:24:41.006642974 +0100
@@ -490,7 +490,7 @@ snmp_log_options(char *optarg, int argc,
char *
snmp_log_syslogname(const char *pstr)
{
- if (pstr)
+ if (pstr && (pstr != syslogname))
strlcpy (syslogname, pstr, sizeof(syslogname));
return syslogname;