diff --git a/core/lib/Drupal/Core/Block/BlockBase.php b/core/lib/Drupal/Core/Block/BlockBase.php
index 04b70ee..36c1cbe 100644
--- a/core/lib/Drupal/Core/Block/BlockBase.php
+++ b/core/lib/Drupal/Core/Block/BlockBase.php
@@ -302,7 +302,7 @@ public function getCacheTags() {
    */
   public function getCacheMaxAge() {
     // By default all block should be permanently cached and invalidated
-    // only through cache tg invalidation.
+    // only through cache tag invalidation.
     return Cache::PERMANENT;
   }