diff --git a/rng-tools.spec b/rng-tools.spec
index 10ee2b2..d14f748 100644
--- a/rng-tools.spec
+++ b/rng-tools.spec
@@ -1,21 +1,17 @@
 Name:            rng-tools
-Version:         6.16
-Release:         1
+Version:         6.14
+Release:         5
 Summary:         Random number generator daemon
 License:         GPLv2+
 URL:             https://github.com/nhorman/rng-tools
 Source0:         https://github.com/nhorman/rng-tools/archive/v%{version}.tar.gz
 Source1:         rngd.service
-Source2:         rngd.sysconfig
 
 #Dependency
 BuildRequires:   gcc make gettext systemd autoconf automake
-BuildRequires:   libgcrypt-devel libcurl-devel libxml2-devel openssl-devel libcap-devel
+BuildRequires:   libgcrypt-devel libcurl-devel libxml2-devel openssl-devel
 BuildRequires:   jansson-devel jitterentropy-library-devel
 
-#Provide the command: killall used by test cases.
-BuildRequires:   psmisc
-
 Requires:        libgcrypt libsysfs openssl libxml2 libcurl jitterentropy-library
 %{?systemd_requires}
 
@@ -37,11 +33,8 @@ and supplies entropy from them to the system kernel's /dev/random machinery.
 %make_install
 
 install -D -t $RPM_BUILD_ROOT%{_unitdir} -m 0644 %{SOURCE1}
-# install sysconfig file
-install -D %{SOURCE2} -m0644 %{buildroot}%{_sysconfdir}/sysconfig/rngd
 
 %check
-export RNGD_JITTER_TIMEOUT=10 #Enseur that the AES can be generated.
 %make_build check 
 
 %pre
@@ -63,13 +56,16 @@ export RNGD_JITTER_TIMEOUT=10 #Enseur that the AES can be generated.
 %{_bindir}/randstat
 %{_sbindir}/rngd
 %attr(0644,root,root) %{_unitdir}/rngd.service
-%config(noreplace) %attr(0644,root,root)    %{_sysconfdir}/sysconfig/rngd
 
 %files help
 %{_mandir}/man1/rngtest.1.*
 %{_mandir}/man8/rngd.8.*
 
 %changelog
+* Mon Nov 13 2023 zhangruifang <zhangruifang1@h-partners.com> - 6.14-5
+- revert version to 6.14-5
+- Large differences between versions 6.16 and 6.14
+
 * Wed Oct 18 2023 zhangruifang <zhangruifang1@h-partners.com> - 6.16-1
 - update version to 6.16
 - update the rngd.service file
diff --git a/rngd.service b/rngd.service
index 189b34c..3d9dcb5 100644
--- a/rngd.service
+++ b/rngd.service
@@ -1,11 +1,8 @@
 [Unit]
 Description=Hardware RNG Entropy Gatherer Daemon
 
-# The "-f" option is required for the systemd service rngd to work with Type=simple
 [Service]
-Type=simple
-EnvironmentFile=/etc/sysconfig/rngd
-ExecStart=/usr/sbin/rngd -f $RNGD_ARGS
+ExecStart=/sbin/rngd -f
 
 [Install]
 WantedBy=multi-user.target
diff --git a/rngd.sysconfig b/rngd.sysconfig
deleted file mode 100644
index cf18656..0000000
--- a/rngd.sysconfig
+++ /dev/null
@@ -1,3 +0,0 @@
-# Optional arguments passed to rngd. See rngd(8) and
-# https://bugzilla.redhat.com/show_bug.cgi?id=1252175#c21
-RNGD_ARGS="-O jitter:timeout:10"
diff --git a/v6.14.tar.gz b/v6.14.tar.gz
new file mode 100644
index 0000000..1b30a34
Binary files /dev/null and b/v6.14.tar.gz differ
diff --git a/v6.16.tar.gz b/v6.16.tar.gz
deleted file mode 100644
index b00338c..0000000
Binary files a/v6.16.tar.gz and /dev/null differ