1 files changed, 1 insertions, 1 deletions

diff --git a/src/sysdep.c b/src/sysdep.c
index 8a8ccbd885f..9a73b1c059d 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -2324,7 +2324,7 @@ init_system_name ()
           strcpy (fqdn, hostname);
           if (domain[0] == '.')
             strcpy (fqdn + hostlen, domain);
-          else
+          else if (domain[0] != 0)
             {
               fqdn[hostlen] = '.';
               strcpy (fqdn + hostlen + 1, domain);