diff --git a/src/RTEMS/base/setBootConfigFromNVRAM.c b/src/RTEMS/base/setBootConfigFromNVRAM.c
index 39fe9a06f..35a771b4c 100644
--- a/src/RTEMS/base/setBootConfigFromNVRAM.c
+++ b/src/RTEMS/base/setBootConfigFromNVRAM.c
@@ -227,7 +227,7 @@ setBootConfigFromNVRAM(void)
     rtems_bsdnet_config.ntp_server[0] = env("NTPSERVER", rtems_bsdnet_bootp_server_name);
     epicsEnvSet("EPICS_TS_NTP_INET",rtems_bsdnet_config.ntp_server[0]);
     cp1 = env("DOMAIN", NULL);
-    if (cp1 == NULL)
+    if (cp1 != NULL)
         rtems_bsdnet_config.domainname = cp1;
     rtems_bsdnet_config.hostname = env("HOSTNAME", "iocNobody");
     rtems_bsdnet_config.ifconfig->ip_address = env("IPADDR0", "192.168.0.2");