diff --git a/htdocs/compta/dons/pre.inc.php b/htdocs/compta/dons/pre.inc.php
index 550dc9a0e96..3aea22e3c4e 100644
--- a/htdocs/compta/dons/pre.inc.php
+++ b/htdocs/compta/dons/pre.inc.php
@@ -20,6 +20,7 @@
  *
  */
 require("../../main.inc.php3");
+require("../../projetdon.class.php");
 
 $libelle[0] = "Promesses non validées";
 $libelle[1] = "Promesses validées";