diff --git a/core/modules/system/tests/src/Unit/Entity/EntityPropertiesVisibilityTest.php b/core/modules/system/tests/src/Unit/Entity/EntityPropertiesVisibilityTest.php
index 7050362..faefd43
--- a/core/modules/system/tests/src/Unit/Entity/EntityPropertiesVisibilityTest.php
+++ b/core/modules/system/tests/src/Unit/Entity/EntityPropertiesVisibilityTest.php
@@ -12,7 +12,7 @@
 /**
  * Tests properties visibility.
  *
- *Tests that all class variables of subclasses of ContentEntityBase and
+ * Tests that all class variables of subclasses of ContentEntityBase and
  * ConfigEntityBase are protected or are allowed to be public.
  *
  * @group Entity