diff --git a/htdocs/core/tpl/extrafields_view.tpl.php b/htdocs/core/tpl/extrafields_view.tpl.php
index 199d9011cf6..b5656c89339 100644
--- a/htdocs/core/tpl/extrafields_view.tpl.php
+++ b/htdocs/core/tpl/extrafields_view.tpl.php
@@ -219,18 +219,18 @@ if (empty($reshook) && isset($extrafields->attributes[$object->table_element]['l
 
 			// Convert date into timestamp format
 			if (in_array($extrafields->attributes[$object->table_element]['type'][$tmpkeyextra], array('date'))) {
-				$datenotinstring = $object->array_options['options_'.$tmpkeyextra];
+				$datenotinstring = empty($object->array_options['options_'.$tmpkeyextra]) ? '' : $object->array_options['options_'.$tmpkeyextra];
 				// print 'X'.$object->array_options['options_' . $tmpkeyextra].'-'.$datenotinstring.'x';
-				if (!is_numeric($object->array_options['options_'.$tmpkeyextra])) {	// For backward compatibility
+				if (!empty($object->array_options['options_'.$tmpkeyextra]) && !is_numeric($object->array_options['options_'.$tmpkeyextra])) {	// For backward compatibility
 					$datenotinstring = $db->jdate($datenotinstring);
 				}
 				//print 'x'.$object->array_options['options_' . $tmpkeyextra].'-'.$datenotinstring.' - '.dol_print_date($datenotinstring, 'dayhour');
 				$value = GETPOSTISSET("options_".$tmpkeyextra) ? dol_mktime(12, 0, 0, GETPOST("options_".$tmpkeyextra."month", 'int'), GETPOST("options_".$tmpkeyextra."day", 'int'), GETPOST("options_".$tmpkeyextra."year", 'int')) : $datenotinstring;
 			}
 			if (in_array($extrafields->attributes[$object->table_element]['type'][$tmpkeyextra], array('datetime'))) {
-				$datenotinstring = $object->array_options['options_'.$tmpkeyextra];
+				$datenotinstring = empty($object->array_options['options_'.$tmpkeyextra]) ? '' : $object->array_options['options_'.$tmpkeyextra];
 				// print 'X'.$object->array_options['options_' . $tmpkeyextra].'-'.$datenotinstring.'x';
-				if (!is_numeric($object->array_options['options_'.$tmpkeyextra])) {	// For backward compatibility
+				if (!empty($object->array_options['options_'.$tmpkeyextra]) && !is_numeric($object->array_options['options_'.$tmpkeyextra])) {	// For backward compatibility
 					$datenotinstring = $db->jdate($datenotinstring);
 				}
 				//print 'x'.$object->array_options['options_' . $tmpkeyextra].'-'.$datenotinstring.' - '.dol_print_date($datenotinstring, 'dayhour');