diff --git a/core/attributedef.class.inc.php b/core/attributedef.class.inc.php
index 0e9f433b67..1e97abdb15 100644
--- a/core/attributedef.class.inc.php
+++ b/core/attributedef.class.inc.php
@@ -925,7 +925,7 @@ class AttributeEnum extends AttributeString
 
 	public function RequiresIndex()
 	{
-		return true;
+		return false;
 	}
 
 	public function GetBasicFilterOperators()