diff --git a/core/attributedef.class.inc.php b/core/attributedef.class.inc.php
index 796c9a7ae..4f38a1cb8 100644
--- a/core/attributedef.class.inc.php
+++ b/core/attributedef.class.inc.php
@@ -4657,7 +4657,7 @@ class AttributeComputedFieldVoid extends AttributeDefinition
 
 	public function GetBasicFilterOperators()
 	{
-		return array();
+		return array("="=>"equals", "!="=>"differs from");
 	}
 	public function GetBasicFilterLooseOperator()
 	{