diff --git a/htdocs/compta/facture/card-rec.php b/htdocs/compta/facture/card-rec.php
index a76332197bc..3909d9437b4 100644
--- a/htdocs/compta/facture/card-rec.php
+++ b/htdocs/compta/facture/card-rec.php
@@ -1354,6 +1354,7 @@ if ($action == 'create') {
 			$dateexample = $object->date_when;
 		}
 
+		// Help of substitution key
 		$substitutionarray = getCommonSubstitutionArray($langs, 2, null, $object);
 
 		$substitutionarray['__INVOICE_PREVIOUS_MONTH__'] = $langs->trans("PreviousMonthOfInvoice").' ('.$langs->trans("Example").': '.dol_print_date(dol_time_plus_duree($dateexample, -1, 'm'), '%m').')';
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 60e3d6bcfdd..b8bfcdc16ac 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
@@ -400,6 +400,20 @@ class doc_generic_invoice_odt extends ModelePDFFactures
 				$tmparray = array_merge($substitutionarray, $array_object_from_properties, $array_user, $array_soc, $array_thirdparty, $array_objet, $array_propal, $array_other, $array_thirdparty_contact);
 				complete_substitutions_array($tmparray, $outputlangs, $object);
 
+				// Complete also with substitution from keys directly found into template
+				// TODO Search all tags {object_...:xxxx} into template then loop on this found tags to analyze them and the the corresponding
+				// property of object and use the xxxx to know how to format it.
+				// Before that, we hard code this substitution as if we have found them into the template.
+				$tmparray['object_PREVIOUS_MONTH'] = dol_print_date(dol_time_plus_duree($this->date, -1, 'm'), '%m');
+				$tmparray['object_MONTH'] = dol_print_date($this->date, '%m');
+				$tmparray['object_NEXT_MONTH'] = dol_print_date(dol_time_plus_duree($this->date, 1, 'm'), '%m');
+				$tmparray['object_PREVIOUS_MONTH_TEXT'] = dol_print_date(dol_time_plus_duree($this->date, -1, 'm'), '%B');
+				$tmparray['object_MONTH_TEXT'] = dol_print_date($this->date, '%B');
+				$tmparray['object_NEXT_MONTH_TEXT'] = dol_print_date(dol_time_plus_duree($this->date, 1, 'm'), '%B');
+				$tmparray['object_PREVIOUS_YEAR'] = dol_print_date(dol_time_plus_duree($this->date, -1, 'y'), '%Y');
+				$tmparray['object_YEAR'] = dol_print_date($this->date, '%Y');
+				$tmparray['object_NEXT_YEAR'] = dol_print_date(dol_time_plus_duree($this->date, 1, 'y'), '%Y');
+
 				// Call the ODTSubstitution hook
 				$parameters = array('odfHandler'=>&$odfHandler, '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