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;