diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index c3da7d0ade4..43cee63c1ed 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -6361,11 +6361,11 @@ function getCommonSubstitutionArray($outputlangs, $onlykey = 0, $exclude = null,
                             if ($extrafields->attribute_type[$key] == 'date') {
                                 $substitutionarray['__EXTRAFIELD_' . strtoupper($key) . '__'] = dol_print_date($object->array_options['options_' . $key], 'day');
                                 $substitutionarray['__EXTRAFIELD_' . strtoupper($key) . '_LOCALE__'] = dol_print_date($object->array_options['options_' . $key], 'day', 'tzserver', $outputlangs);
-                                $substitutionarray['__EXTRAFIELD_' . strtoupper($key) . '_RFC__'] = dol_print_date($object->array_options['options_' . $key],'dayrfc');
+                                $substitutionarray['__EXTRAFIELD_' . strtoupper($key) . '_RFC__'] = dol_print_date($object->array_options['options_' . $key], 'dayrfc');
                             } elseif ($extrafields->attribute_type[$key] == 'datetime') {
                                 $datetime = $object->array_options['options_'.$key];
-                                $substitutionarray['__EXTRAFIELD_' . strtoupper($key) . '__'] = ($datetime!="0000-00-00 00:00:00" ? dol_print_date($datetime,'dayhour') : '');
-                                $substitutionarray['__EXTRAFIELD_' . strtoupper($key) . '_LOCALE__'] = ($datetime!="0000-00-00 00:00:00" ? dol_print_date($datetime, 'dayhour', 'tzserver', $outputlangs) : '');
+                                $substitutionarray['__EXTRAFIELD_' . strtoupper($key) . '__'] = ($datetime != "0000-00-00 00:00:00" ? dol_print_date($datetime, 'dayhour') : '');
+                                $substitutionarray['__EXTRAFIELD_' . strtoupper($key) . '_LOCALE__'] = ($datetime != "0000-00-00 00:00:00" ? dol_print_date($datetime, 'dayhour', 'tzserver', $outputlangs) : '');
                                 $substitutionarray['__EXTRAFIELD_' . strtoupper($key) . '_DAY_LOCALE__'] = ($datetime != "0000-00-00 00:00:00" ? dol_print_date($datetime, 'day', 'tzserver', $outputlangs) : '');
                                 $substitutionarray['__EXTRAFIELD_' . strtoupper($key) . '_RFC__'] = ($datetime != "0000-00-00 00:00:00" ? dol_print_date($datetime, 'dayhourrfc') : '');
                             }