diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index 23e35abfc13..80011c8e885 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -6270,7 +6270,7 @@ abstract class CommonObject
 					case 'date':
 					case 'datetime':
 						// If data is a string instead of a timestamp, we convert it
-						if (!is_int($this->array_options[$key])) {
+						if (!is_numeric($this->array_options[$key]) || $this->array_options[$key] != intval($this->array_options[$key])) {
 							$this->array_options[$key] = strtotime($this->array_options[$key]);
 						}
 						$new_array_options[$key] = $this->db->idate($this->array_options[$key]);