diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/DecimalItem.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/DecimalItem.php
index b46cfc7..314d1a1 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/DecimalItem.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/DecimalItem.php
@@ -57,6 +57,7 @@ public static function schema(FieldStorageDefinitionInterface $field_definition)
           'type' => 'numeric',
           'precision' => $field_definition->getSetting('precision'),
           'scale' => $field_definition->getSetting('scale'),
+          'unsigned' => $field_definition->getSetting('unsigned')
         )
       ),
     );