diff --git a/htdocs/core/class/extrafields.class.php b/htdocs/core/class/extrafields.class.php
index c2c7752e994..9400c64de85 100644
--- a/htdocs/core/class/extrafields.class.php
+++ b/htdocs/core/class/extrafields.class.php
@@ -1321,6 +1321,7 @@ class ExtraFields
                         print 'Error in request ' . $sql . ' ' . $this->db->lasterror() . '. Check setup of extra parameters.<br>';
                     }
                 } else {
+					require_once DOL_DOCUMENT_ROOT . '/categories/class/categorie.class.php';
                     $data = $form->select_all_categories(Categorie::$MAP_ID_TO_CODE[$InfoFieldList[5]], '', 'parent', 64, $InfoFieldList[6], 1, 1);
                     $out .= '<option value="0">&nbsp;</option>';
                     foreach ($data as $data_key => $data_value) {
@@ -1548,6 +1549,7 @@ class ExtraFields
                         print 'Error in request ' . $sql . ' ' . $this->db->lasterror() . '. Check setup of extra parameters.<br>';
                     }
                 } else {
+					require_once DOL_DOCUMENT_ROOT . '/categories/class/categorie.class.php';
                     $data = $form->select_all_categories(Categorie::$MAP_ID_TO_CODE[$InfoFieldList[5]], '', 'parent', 64, $InfoFieldList[6], 1, 1);
                     $out = $form->multiselectarray($keyprefix . $key . $keysuffix, $data, $value_arr, '', 0, '', 0, '100%');
                 }
@@ -1628,7 +1630,7 @@ class ExtraFields
 		if ($hidden) return '';		// This is a protection. If field is hidden, we should just not call this method.
 
 		//if ($computed) $value =		// $value is already calculated into $value before calling this method
-		
+
 		$showsize=0;
 		if ($type == 'date')
 		{