diff --git a/test/classes/gis/PMA_GIS_Polygon_test.php b/test/classes/gis/PMA_GIS_Polygon_test.php
index 13e1efd4a3..4da57c3f29 100644
--- a/test/classes/gis/PMA_GIS_Polygon_test.php
+++ b/test/classes/gis/PMA_GIS_Polygon_test.php
@@ -10,6 +10,7 @@ require_once 'PMA_GIS_Geom_test.php';
 require_once 'libraries/gis/pma_gis_geometry.php';
 require_once 'libraries/gis/pma_gis_polygon.php';
 require_once 'libraries/tcpdf/tcpdf.php';
+require_once 'libraries/Util.class.php';
 
 /**
  * Tests for PMA_GIS_Polygon class