diff --git a/plugins/bc-blog/src/View/Helper/BlogHelper.php b/plugins/bc-blog/src/View/Helper/BlogHelper.php
index f16352a58f..775c1cb8c3 100755
--- a/plugins/bc-blog/src/View/Helper/BlogHelper.php
+++ b/plugins/bc-blog/src/View/Helper/BlogHelper.php
@@ -1315,8 +1315,10 @@ public function mailFormLink($title, $contentsName, $datas = [], $options = [])
 
     /**
      * 文字列から制御文字を取り除く
+     * @return string
      * @checked
      * @noTodo
+     * @unitTest
      */
     public function removeCtrlChars($string)
     {
diff --git a/plugins/bc-blog/tests/TestCase/View/Helper/BlogHelperTest.php b/plugins/bc-blog/tests/TestCase/View/Helper/BlogHelperTest.php
index 8775c5bf4f..21ec54dc42 100755
--- a/plugins/bc-blog/tests/TestCase/View/Helper/BlogHelperTest.php
+++ b/plugins/bc-blog/tests/TestCase/View/Helper/BlogHelperTest.php
@@ -1007,8 +1007,10 @@ public function testMailFormLink()
      */
     public function testRemoveCtrlChars()
     {
-        $this->markTestIncomplete('こちらのテストはまだ未確認です');
-        $this->markTestIncomplete('このテストは、まだ実装されていません。');
+        $string = "\ebaserCMS \t\tHello \v\vWorld\0\f";
+        $result = $this->Blog->removeCtrlChars($string);
+        //戻り値を確認
+        $this->assertEquals('baserCMS Hello World', $result);
     }
 
     /**