diff --git a/README.dc b/README.dc
deleted file mode 100644
index d67a5567fa19d66ef58e61713c8be1e9acdcd2cc..0000000000000000000000000000000000000000
--- a/README.dc
+++ /dev/null
@@ -1,12 +0,0 @@
-MIT Kerberos 5 Support
-=======================
-
-Fedora is using MIT Kerberos implementation as its Kerberos infrastructure of
-choice. The Samba build in Fedora is using MIT Kerberos implementation in order
-to allow system-wide interoperability between both desktop and server
-applications running on the same machine.
-
-In this build the Active Directory support has been disabled.
-
-In case of further questions do not hesitate to send your inquiries to
-samba-owner@fedoraproject.org
diff --git a/README.downgrade b/README.downgrade
deleted file mode 100644
index 5cb0aaabb34c1fbfd0cd29b479f11ca721ce62c1..0000000000000000000000000000000000000000
--- a/README.downgrade
+++ /dev/null
@@ -1,29 +0,0 @@
-Downgrading Samba
-=================
-
-Short version: data-preserving downgrades between Samba versions are not supported
-
-Long version:
-With Samba development there are cases when on-disk database format evolves.
-In general, Samba Team attempts to maintain forward compatibility and
-automatically upgrade databases during runtime when requires.
-However, when downgrade is required Samba will not perform downgrade to
-existing databases. It may be impossible if new features that caused database
-upgrade are in use. Thus, one needs to consider a downgrade procedure before
-actually downgrading Samba setup.
-
-Please always perform back up prior both upgrading and downgrading across major
-version changes. Restoring database files is easiest and simplest way to get to
-previously working setup.
-
-Easiest way to downgrade is to remove all created databases and start from scratch.
-This means losing all authentication and domain relationship data, as well as
-user databases (in case of tdb storage), printers, registry settings, and winbindd
-caches.
-
-Remove databases in following locations:
-/var/lib/samba/*.tdb
-/var/lib/samba/private/*.tdb
-
-In particular, registry settings are known to prevent running downgraded versions
-(Samba 4 to Samba 3) as registry format has changed between Samba 3 and Samba 4.
diff --git a/samba.spec b/samba.spec
index 191a4adab8b48a5aed25a8e069806fc92f12c000..93c62e6570d72ab95cffe76ce1e49e46e4adabb2 100644
--- a/samba.spec
+++ b/samba.spec
@@ -50,7 +50,7 @@
 
 Name:           samba
 Version:        4.9.1
-Release:        8
+Release:        9
 Summary:        A suite for Linux to interoperate with Windows
 License:        GPLv3+ and LGPLv3+
 URL:            http://www.samba.org/
@@ -62,8 +62,6 @@ Source4:        smb.conf.vendor
 Source5:        smb.conf.example
 Source6:        pam_winbind.conf
 Source7:        samba.pamd
-Source8:        README.dc
-Source9:        README.downgrade
 
 Patch6000:      samba-4.9.0rc5-stack-protector.patch
 Patch6001:      CVE-2018-14629.patch
@@ -659,13 +657,6 @@ install -dm755 %{buildroot}%{_sysconfdir}/ctdb
 install -m644 ctdb/config/ctdb.conf %{buildroot}%{_sysconfdir}/ctdb/ctdb.conf
 %endif
 
-install -m644 %{SOURCE9} packaging/README.downgrade
-
-%if ! %with_dc
-install -m644 %{SOURCE8} packaging/README.dc
-install -m644 %{SOURCE8} packaging/README.dc-libs
-%endif
-
 %if %with_clustering_support
 install -m644 ctdb/config/ctdb.service %{buildroot}%{_unitdir}
 %endif
@@ -941,7 +932,6 @@ fi
 %doc README WHATSNEW.txt
 %doc examples/autofs examples/LDAP examples/misc
 %doc examples/printer-accounting examples/printing
-%doc packaging/README.downgrade
 %{_libdir}/libdcerpc-samr.so.*
 %{_libdir}/%{name}/libMESSAGING-samba4.so
 %{_libdir}/%{name}/libMESSAGING-SEND-samba4.so
@@ -1272,8 +1262,6 @@ fi
 %{_mandir}/man8/samba.8*
 %{_mandir}/man8/samba-gpupdate.8*
 %{_mandir}/man8/samba-tool.8*
-%else # with_dc
-%doc packaging/README.dc
 %endif # with_dc
 
 %if %with_dc
@@ -3222,6 +3210,9 @@ fi
 %{_mandir}/man8/smbpasswd.8*
 
 %changelog
+* Fri Jan 10 2020 openEuler Buildteam <buildteam@openeuler.org> - 4.9.8-9
+- clean unused file
+
 * Tue Dec 31 2019 openEuler Buildteam <buildteam@openeuler.org> - 4.9.1-8
 - Type:NA
 - Id:NA