diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index 33e3806..0b3bfef 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -2342,7 +2342,7 @@ function system_update_8042() {
  *
  * @ingroup config_upgrade
  */
-function system_update_8042() {
+function system_update_8043() {
   update_variables_to_config('system.performance', array(
     'theme_link' => 'theme_link',
   ));