diff --git a/SOURCES/thunderbird-centos-default-prefs.js.el6 b/SOURCES/thunderbird-centos-default-prefs.js.el6
index c412cb5..75de82e 100644
--- a/SOURCES/thunderbird-centos-default-prefs.js.el6
+++ b/SOURCES/thunderbird-centos-default-prefs.js.el6
@@ -2,7 +2,7 @@ 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.vendor", "CentOS");
 pref("general.useragent.vendorSub", "THUNDERBIRD_RPM_VR");
 pref("intl.locale.matchOS", true);
 pref("mail.shell.checkDefaultClient", false);
diff --git a/SOURCES/thunderbird-centos-default-prefs.js.el7 b/SOURCES/thunderbird-centos-default-prefs.js.el7
index c412cb5..75de82e 100644
--- a/SOURCES/thunderbird-centos-default-prefs.js.el7
+++ b/SOURCES/thunderbird-centos-default-prefs.js.el7
@@ -2,7 +2,7 @@ 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.vendor", "CentOS");
 pref("general.useragent.vendorSub", "THUNDERBIRD_RPM_VR");
 pref("intl.locale.matchOS", true);
 pref("mail.shell.checkDefaultClient", false);