diff --git a/0001-changed-the-default-value-of-application.patch b/0001-changed-the-default-value-of-application.patch
new file mode 100644
index 0000000..2038017
--- /dev/null
+++ b/0001-changed-the-default-value-of-application.patch
@@ -0,0 +1,27 @@
+From 0fce064dc0dd55853688b4aa51fa6ee4fccc4b43 Mon Sep 17 00:00:00 2001
+From: tanyulong <tanyulong@kylinos.cn>
+Date: Thu, 28 Oct 2021 20:08:28 +0800
+Subject: [PATCH] changed the default value of application
+
+---
+ debian/ukui-mimeapps.list | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/debian/ukui-mimeapps.list b/debian/ukui-mimeapps.list
+index e172c63..f60e65c 100755
+--- a/debian/ukui-mimeapps.list
++++ b/debian/ukui-mimeapps.list
+@@ -4,8 +4,8 @@ x-scheme-handler/http=firefox.desktop
+ x-scheme-handler/https=firefox.desktop
+ x-scheme-handler/about=firefox.desktop
+ x-scheme-handler/mailto=thunderbird.desktop
+-application/x-deb=ubuntu-kylin-software-center.desktop
+-application/x-debian-package=ubuntu-kylin-software-center.desktop
++application/x-deb=kylin-installer.desktop
++application/x-debian-package=kylin-installer.desktop
+ application/x-extension-eml=thunderbird.desktop
+ message/rfc822=thunderbird.desktop
+ inode/directory=peony-folder-handler.desktop
+-- 
+2.30.0
+
diff --git a/ubuntukylin-default-settings.spec b/ubuntukylin-default-settings.spec
index 9f3d7f5..93e16fa 100644
--- a/ubuntukylin-default-settings.spec
+++ b/ubuntukylin-default-settings.spec
@@ -1,12 +1,14 @@
 %define debug_package %{nil}
 Name:           ubuntukylin-default-settings
 Version:        20.04.2
-Release:        1
+Release:        2
 Summary:        Default settings for the Ubuntu Kylin desktop
 License:        GPL-3+
 URL:            http://www.ukui.org
 Source0:        %{name}-%{version}.tar.gz
 
+patch0: 	0001-changed-the-default-value-of-application.patch
+
 #BuildRequires: sassc
 #Requires: ubuntukylin-keyring
 
@@ -16,6 +18,7 @@ This package contains the default settings used by Ubuntu Kylin.
 
 %prep
 %setup -q
+%patch0 -p1
 
 %build
 
@@ -64,5 +67,8 @@ rm -rf $RPM_BUILD_ROOT
 %{_sysconfdir}/apport/native-origins.d/
 
 %changelog
+* Thu Oct 28 2021 tanyulong <tanyulong@kylinos.cn> - 20.04.2 -2
+- changed the default value of application
+
 * Thu Jul 9 2020 douyan <douyan@kylinos.cn> - 20.04.2-1
 - Init package for openEuler