diff --git a/include/constant.php b/include/constant.php
index 51a8f0d8e..9a3153b67 100644
--- a/include/constant.php
+++ b/include/constant.php
@@ -309,8 +309,5 @@ define ('EMAIL_LIMIT',1002);
 define ('EXC_PARAM_VALUE',1005);
 define ('EXC_PARAM_TYPE',1006);
 define ('EXC_DUPLICATE',1200);
-define ('ICONON','icon-on.png');
-define ('ICONOFF','icon-off.png');
 define ("PINDG","");
 define ("UNPINDG","");
-//define ("UNPINDG","≊");