diff --git a/htdocs/projet/class/api_projects.class.php b/htdocs/projet/class/api_projects.class.php
index 8cbb3949cd5..fc10f49d38d 100644
--- a/htdocs/projet/class/api_projects.class.php
+++ b/htdocs/projet/class/api_projects.class.php
@@ -122,6 +122,7 @@ class Projects extends DolibarrApi
 			$sql .= ", sc.fk_soc, sc.fk_user"; // We need these fields in order to filter by sale (including the case where the user can only see his prospects)
 		}
 		$sql .= " FROM ".MAIN_DB_PREFIX."projet as t";
+		$sql .= " LEFT JOIN ".MAIN_DB_PREFIX."projet_extrafields AS ef ON ef.fk_object = t.rowid";	// So we will be able to filter on extrafields
 		if ($category > 0) {
 			$sql .= ", ".MAIN_DB_PREFIX."categorie_project as c";
 		}