diff --git a/htdocs/core/modules/propale/doc/doc_generic_proposal_odt.modules.php b/htdocs/core/modules/propale/doc/doc_generic_proposal_odt.modules.php
index d696d95c4d5..2479acaaaec 100644
--- a/htdocs/core/modules/propale/doc/doc_generic_proposal_odt.modules.php
+++ b/htdocs/core/modules/propale/doc/doc_generic_proposal_odt.modules.php
@@ -381,6 +381,7 @@ class doc_generic_proposal_odt extends ModelePDFPropales
 
 				$tmparray = array_merge($array_user,$array_soc,$array_thirdparty,$array_objet,$array_other,$array_thirdparty_contact);
 				complete_substitutions_array($tmparray, $outputlangs, $object);
+				$object->fetch_optionals();
 				// Call the ODTSubstitution hook
 				$parameters=array('file'=>$file,'object'=>$object,'outputlangs'=>$outputlangs,'substitutionarray'=>&$tmparray);
 				$reshook=$hookmanager->executeHooks('ODTSubstitution',$parameters,$this,$action);    // Note that $action and $object may have been modified by some hooks