diff --git a/plugins/baser-core/src/Model/Table/AppTable.php b/plugins/baser-core/src/Model/Table/AppTable.php
index b9e18cfef6..4920dfe867 100755
--- a/plugins/baser-core/src/Model/Table/AppTable.php
+++ b/plugins/baser-core/src/Model/Table/AppTable.php
@@ -125,6 +125,7 @@ public function belongsToMany(string $associated, array $options = []): BelongsT
      * @return string
      * @checked
      * @noTodo
+     * @unitTest
      */
     public function addPrefix($table)
     {
diff --git a/plugins/baser-core/tests/TestCase/Model/Table/AppTableTest.php b/plugins/baser-core/tests/TestCase/Model/Table/AppTableTest.php
index 3e961591ec..6f6c297e4d 100644
--- a/plugins/baser-core/tests/TestCase/Model/Table/AppTableTest.php
+++ b/plugins/baser-core/tests/TestCase/Model/Table/AppTableTest.php
@@ -297,4 +297,22 @@ public function testSortdown()
         $this->assertEquals(2, $Plugins->get(2)->priority);
     }
 
+    /**
+     * test addPrefix
+     * @return void
+     */
+    public function testAddPrefix()
+    {
+        //デフォルトテーブル
+        $this->assertEquals('plugin', $this->App->addPrefix('plugin'));
+
+        //プレフィックスを追加場合、
+        $dbConfig = BcUtil::getCurrentDbConfig();
+        $dbConfig['prefix'] = 'unittest_';
+        $connection = new Connection($dbConfig);
+        $this->App = $this->getTableLocator()->get('BaserCore.App')->setConnection($connection);
+
+        $this->assertEquals('unittest_plugin', $this->App->addPrefix('plugin'));
+    }
+
 }