diff --git a/SOURCES/thunderbird-centos-default-prefs.js b/SOURCES/thunderbird-centos-default-prefs.js
new file mode 100644
index 0000000..013aa21
--- /dev/null
+++ b/SOURCES/thunderbird-centos-default-prefs.js
@@ -0,0 +1,28 @@
+pref("app.update.enabled", false);
+pref("app.update.autoInstallEnabled", false);
+# Allow users to set custom colors
+# pref("browser.display.use_system_colors",   true);
+pref("general.useragent.vendor", "CentOS");
+pref("general.useragent.vendorSub", "THUNDERBIRD_RPM_VR");
+pref("intl.locale.matchOS", true);
+pref("mail.shell.checkDefaultClient", false);
+pref("toolkit.networkmanager.disable", false);
+pref("offline.autoDetect", true);
+
+# Disable global indexing by default
+pref("mailnews.database.global.indexer.enabled", false);
+
+# Do not switch to Smart Folders after upgrade to 3.0b4
+pref("mail.folder.views.version", "1")
+pref("extensions.shownSelectionUI", true);
+pref("extensions.autoDisableScope", 0);
+
+# For rhbz#1024232
+pref("ui.SpellCheckerUnderlineStyle",       1);
+
+/* Workaround for rhbz#1134876 */
+pref("javascript.options.baselinejit",      false);
+/* Workaround for rhbz#1110291 */
+pref("network.negotiate-auth.allow-insecure-ntlm-v1", true);
+/* Workaround for mozbz#1063315 */
+pref("security.use_mozillapkix_verification", false);
diff --git a/SOURCES/thunderbird-redhat-default-prefs.js b/SOURCES/thunderbird-redhat-default-prefs.js
deleted file mode 100644
index af23193..0000000
--- a/SOURCES/thunderbird-redhat-default-prefs.js
+++ /dev/null
@@ -1,28 +0,0 @@
-pref("app.update.enabled", false);
-pref("app.update.autoInstallEnabled", false);
-# Allow users to set custom colors
-# pref("browser.display.use_system_colors",   true);
-pref("general.useragent.vendor", "Red Hat");
-pref("general.useragent.vendorSub", "THUNDERBIRD_RPM_VR");
-pref("intl.locale.matchOS", true);
-pref("mail.shell.checkDefaultClient", false);
-pref("toolkit.networkmanager.disable", false);
-pref("offline.autoDetect", true);
-
-# Disable global indexing by default
-pref("mailnews.database.global.indexer.enabled", false);
-
-# Do not switch to Smart Folders after upgrade to 3.0b4
-pref("mail.folder.views.version", "1")
-pref("extensions.shownSelectionUI", true);
-pref("extensions.autoDisableScope", 0);
-
-# For rhbz#1024232
-pref("ui.SpellCheckerUnderlineStyle",       1);
-
-/* Workaround for rhbz#1134876 */
-pref("javascript.options.baselinejit",      false);
-/* Workaround for rhbz#1110291 */
-pref("network.negotiate-auth.allow-insecure-ntlm-v1", true);
-/* Workaround for mozbz#1063315 */
-pref("security.use_mozillapkix_verification", false);
diff --git a/SPECS/thunderbird.spec b/SPECS/thunderbird.spec
index d7da7a1..1b53374 100644
--- a/SPECS/thunderbird.spec
+++ b/SPECS/thunderbird.spec
@@ -79,7 +79,7 @@ Source3:        mklangsource.sh
 
 Source10:       thunderbird-mozconfig
 Source11:       thunderbird-mozconfig-branded
-Source12:       thunderbird-redhat-default-prefs.js
+Source12:       thunderbird-centos-default-prefs.js
 Source20:       thunderbird.desktop
 Source21:       thunderbird.sh.in
 Source100:      find-external-requires
@@ -587,6 +587,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Thu Oct 01 2015 CentOS Sources <bugs@centos.org> - 38.3.0-1.el7.centos
+- rebrand default prefs
+
 * Tue Sep 29 2015 Jan Horak <jhorak@redhat.com> - 38.3.0-1
 - Update to 38.3.0