diff --git a/sim_serial.c b/sim_serial.c
index 86ae870e..74bdfb32 100644
--- a/sim_serial.c
+++ b/sim_serial.c
@@ -362,7 +362,7 @@ if (serial_open_device_count) {
     for (i=0; i<serial_open_device_count; i++) {
         d = sim_serial_getdesc_byname(serial_open_devices[i].name, desc);
         fprintf(st, " %s\tLn%02d %s%s%s%s\tConfig: %s\n", serial_open_devices[i].line->mp->dptr->name, (int)(serial_open_devices[i].line->mp->ldsc-serial_open_devices[i].line),
-                    serial_open_devices[i].line->destination, d ? " {" : "", d ? d : "", d ? ")" : "", serial_open_devices[i].line->serconfig);
+                    serial_open_devices[i].line->destination, ((d != NULL) && (*d != '\0')) ? " (" : "", ((d != NULL) && (*d != '\0'))  ? d : "", ((d != NULL) && (*d != '\0'))  ? ")" : "", serial_open_devices[i].line->serconfig);
         }
     }
 return SCPE_OK;