diff --git a/htdocs/core/class/html.formprojet.class.php b/htdocs/core/class/html.formprojet.class.php
index a6c94d79780..25e2cb13d81 100644
--- a/htdocs/core/class/html.formprojet.class.php
+++ b/htdocs/core/class/html.formprojet.class.php
@@ -458,7 +458,7 @@ class FormProjets
 	 *    @param    int         $limitonstatus      Add filters to limit length of list to opened status (for example to avoid ERR_RESPONSE_HEADERS_TOO_BIG on project/element.php page). TODO To implement
 	 *    @return	int|string						The HTML select list of element or '' if nothing or -1 if KO
 	 */
-	function select_element($table_element, $socid=0, $morecss='', $limitonstatus=-2)
+	function select_element($table_element, $socid=0, $morecss='', $limitonstatus=-2,$projectkey="fk_projet")
 	{
 		global $conf, $langs;
 
@@ -468,7 +468,7 @@ class FormProjets
 		if (! in_array($table_element, array('don','expensereport_det','expensereport','loan','stock_mouvement','chargesociales'))) $linkedtothirdparty=true;
 
 		$sqlfilter='';
-		$projectkey="fk_projet";
+		
 		//print $table_element;
 		switch ($table_element)
 		{
diff --git a/htdocs/projet/class/project.class.php b/htdocs/projet/class/project.class.php
index edfbef084df..1078733c19e 100644
--- a/htdocs/projet/class/project.class.php
+++ b/htdocs/projet/class/project.class.php
@@ -518,7 +518,7 @@ class Project extends CommonObject
      *  @param		int			$datee			End date
      * 	@return		mixed						Array list of object ids linked to project, < 0 or string if error
      */
-    function get_element_list($type, $tablename, $datefieldname='', $dates='', $datee='')
+    function get_element_list($type, $tablename, $datefieldname='', $dates='', $datee='', $project_field='fk_projet')
     {
         $elements = array();
 
@@ -548,7 +548,7 @@ class Project extends CommonObject
 		}
         else
 		{
-            $sql = "SELECT rowid FROM " . MAIN_DB_PREFIX . $tablename." WHERE fk_projet IN (". $ids .")";
+            $sql = "SELECT rowid FROM " . MAIN_DB_PREFIX . $tablename." WHERE ".$project_field." IN (". $ids .")";
 		}
 
 		if ($dates > 0)
diff --git a/htdocs/projet/element.php b/htdocs/projet/element.php
index dd19ceeb263..93b4cb1b810 100644
--- a/htdocs/projet/element.php
+++ b/htdocs/projet/element.php
@@ -562,11 +562,12 @@ foreach ($listofreferent as $key => $value)
 	$datefieldname=$value['datefieldname'];
 	$qualified=$value['test'];
 	$margin = $value['margin'];
+	$project_field = $value['project_field'];
 	if ($qualified && isset($margin))		// If this element must be included into profit calculation ($margin is 'minus' or 'plus')
 	{
 		$element = new $classname($db);
 
-		$elementarray = $object->get_element_list($key, $tablename, $datefieldname, $dates, $datee);
+		$elementarray = $object->get_element_list($key, $tablename, $datefieldname, $dates, $datee, !empty($project_field)?$project_field:'fk_projet');
 
 		if (count($elementarray)>0 && is_array($elementarray))
 		{
@@ -697,6 +698,7 @@ foreach ($listofreferent as $key => $value)
 	$urlnew=$value['urlnew'];
 	$buttonnew=$value['buttonnew'];
     $testnew=$value['testnew'];
+	$project_field=$value['project_field'];
 
 	if ($qualified)
 	{
@@ -719,7 +721,7 @@ foreach ($listofreferent as $key => $value)
 
        	if (empty($conf->global->PROJECT_LINK_ON_OVERWIEW_DISABLED) && $idtofilterthirdparty && !in_array($tablename, array('payment_various')))
        	{
-			$selectList=$formproject->select_element($tablename, $idtofilterthirdparty, 'minwidth300');
+			$selectList=$formproject->select_element($tablename, $idtofilterthirdparty, 'minwidth300',-2,!empty($project_field)?$project_field:'fk_projet');
 			if (! $selectList || ($selectList<0))
 			{
 				setEventMessages($formproject->error,$formproject->errors,'errors');
@@ -787,7 +789,7 @@ foreach ($listofreferent as $key => $value)
 		else print '<td align="right" width="200">'.$langs->trans("Status").'</td>';
 		print '</tr>';
 
-		$elementarray = $object->get_element_list($key, $tablename, $datefieldname, $dates, $datee);
+		$elementarray = $object->get_element_list($key, $tablename, $datefieldname, $dates, $datee,!empty($project_field)?$project_field:'fk_projet');
 		if (is_array($elementarray) && count($elementarray)>0)
 		{
 			$total_ht = 0;