1 files changed, 2 insertions, 1 deletions

diff --git a/libbb/login.c b/libbb/login.c
index 98e641cce..ba9f4d2b5 100644
--- a/libbb/login.c
+++ b/libbb/login.c
@@ -62,7 +62,8 @@ void FAST_FUNC print_login_issue(const char *issue_file, const char *tty)
                         case 'm':
                                 outbuf = uts.machine;
                                 break;
-#ifndef HAVE_NO_UTSNAME_DOMAINNAME
+/* The field domainname of struct utsname is Linux specific. */
+#if defined(__linux__)
                         case 'D':
                         case 'o':
                                 outbuf = uts.domainname;