diff --git a/htdocs/core/modules/commande/doc/doc_generic_order_odt.modules.php b/htdocs/core/modules/commande/doc/doc_generic_order_odt.modules.php
index 4ba2a560f5d..7ec078099db 100644
--- a/htdocs/core/modules/commande/doc/doc_generic_order_odt.modules.php
+++ b/htdocs/core/modules/commande/doc/doc_generic_order_odt.modules.php
@@ -105,8 +105,9 @@ class doc_generic_order_odt extends ModelePDFCommandes
         	'object_date'=>dol_print_date($object->date,'day'),
         	'object_date_delivery'=>dol_print_date($object->date_livraison,'dayhour'),
         	'object_date_creation'=>dol_print_date($object->date_creation,'day'),
-            'object_date_modification'=>dol_print_date($object->date_modification,'day'),
-            'object_date_validation'=>dol_print_date($object->date_validation,'dayhour'),
+        	'object_date_modification'=>(! empty($object->date_modification)?dol_print_date($object->date_modification,'day'):''),
+        	'object_date_validation'=>(! empty($object->date_validation)?dol_print_date($object->date_validation,'dayhour'):''),
+        	'object_date_delivery_planed'=>(! empty($object->date_livraison)?dol_print_date($object->date_livraison,'day'):''),
         	'object_date_close'=>dol_print_date($object->date_cloture,'dayhour'),
             'object_payment_mode_code'=>$object->mode_reglement_code,
            	'object_payment_mode'=>($outputlangs->transnoentitiesnoconv('PaymentType'.$object->mode_reglement_code)!='PaymentType'.$object->mode_reglement_code?$outputlangs->transnoentitiesnoconv('PaymentType'.$object->mode_reglement_code):$object->mode_reglement),
diff --git a/htdocs/core/modules/facture/doc/doc_generic_invoice_odt.modules.php b/htdocs/core/modules/facture/doc/doc_generic_invoice_odt.modules.php
index 753446b10ad..393804c580a 100644
--- a/htdocs/core/modules/facture/doc/doc_generic_invoice_odt.modules.php
+++ b/htdocs/core/modules/facture/doc/doc_generic_invoice_odt.modules.php
@@ -116,8 +116,8 @@ class doc_generic_invoice_odt extends ModelePDFFactures
         	'object_date_limit'=>dol_print_date($object->date_lim_reglement,'day'),
         	'object_date_creation'=>dol_print_date($object->date_creation,'day'),
             'object_date_modification'=>(! empty($object->date_modification)?dol_print_date($object->date_modification,'day'):''),
-            'object_date_validation'=>dol_print_date($object->date_validation,'dayhour'),
-        	'object_date_delivery_planed'=>dol_print_date($object->date_livraison,'dayhour'),
+            'object_date_validation'=>(! empty($object->date_validation)?dol_print_date($object->date_validation,'dayhour'):''),
+        	'object_date_delivery_planed'=>(! empty($object->date_livraison)?dol_print_date($object->date_livraison,'day'):''),
             'object_payment_mode_code'=>$object->mode_reglement_code,
         	'object_payment_mode'=>($outputlangs->transnoentitiesnoconv('PaymentType'.$object->mode_reglement_code)!='PaymentType'.$object->mode_reglement_code?$outputlangs->transnoentitiesnoconv('PaymentType'.$object->mode_reglement_code):$object->mode_reglement),
         	'object_payment_term_code'=>$object->cond_reglement_code,