diff --git a/core/modules/system/system.module b/core/modules/system/system.module
index 6f2af62..41c4f6f 100644
--- a/core/modules/system/system.module
+++ b/core/modules/system/system.module
@@ -1434,7 +1434,7 @@ function system_entity_type_alter(array &$entity_types) {
       $definition = $typed_config_manager->getDefinition($name);
       $config_export = $entity_type->get('config_export');
       foreach (['label_singular', 'label_plural', 'label_count'] as $key) {
-        if (!empty($definition['mapping'][$key])) {
+        if (!empty($definition['mapping'][$key]) && !in_array($key, $config_export)) {
           $config_export[] = $key;
         }
       }