diff --git a/app/Tdt/Core/Formatters/KMLFormatter.php b/app/Tdt/Core/Formatters/KMLFormatter.php
index 6ac00d62..1ad1b786 100644
--- a/app/Tdt/Core/Formatters/KMLFormatter.php
+++ b/app/Tdt/Core/Formatters/KMLFormatter.php
@@ -30,7 +30,7 @@ public static function createResponse($dataObj)
     public static function getBody($dataObj)
     {
         self::$definition = $dataObj->definition;
-        self::$map_property = $dataObj->source_definition['map_property'];
+        self::$map_property = $dataObj->definition['map_property'];
 
         // Build the body
         // KML header