diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index 9cfe5b47de5..c432fbd8b60 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -8891,7 +8891,7 @@ abstract class CommonObject
 					}
 				}
 			} else {
-				$this->{$field} = !empty($obj->{$field}) ? $obj->{$field} : null;
+				$this->{$field} = isset($obj->{$field}) ? $obj->{$field} : null;
 			}
 		}