diff --git a/core/modules/field/src/Entity/FieldStorageConfig.php b/core/modules/field/src/Entity/FieldStorageConfig.php
index 5fff1aa..4eb97db 100644
--- a/core/modules/field/src/Entity/FieldStorageConfig.php
+++ b/core/modules/field/src/Entity/FieldStorageConfig.php
@@ -701,7 +701,7 @@ public function __sleep() {
     // Only serialize necessary properties, excluding those that can be
     // recalculated.
     $properties = get_object_vars($this);
-    unset($properties['schema'], $properties['propertyDefinitions'], $properties['original']);
+    unset($properties['propertyDefinitions'], $properties['original']);
     return array_keys($properties);
   }