diff --git a/setup.spec b/setup.spec
index 2c0b969..aa7cd69 100644
--- a/setup.spec
+++ b/setup.spec
@@ -9,7 +9,7 @@ Source0: http://releases.pagure.org/%{name}/%{name}-%{version}.tar.bz2
 Patch0: support-filesystems-xfs.patch
 Patch1: source-cshlocal-when-login.patch
 BuildArch: noarch
-BuildRequires: bc systemd
+BuildRequires: systemd
 BuildRequires: bash tcsh perl-interpreter
 #require system release for saner dependency order
 Requires: system-release
@@ -117,8 +117,8 @@ end
 %{_tmpfilesdir}/%{name}.conf
 
 %changelog
-* Thu May 27 2021 panxiaohe <panxiaohe@huawei.com> - 2.13.7-2
-- Add bc and systemd to BuildRequires
+* Fri May 28 2021 panxiaohe <panxiaohe@huawei.com> - 2.13.7-2
+- Add systemd to BuildRequires to use _tmpfilesdir macro
 
 * Sat Aug 29 2020 zoulin <zoulin13@huawei.com> - 2.13.7-1
 - Type:enhancement