diff --git a/kernel/classes/datatypes/ezdatetime/ezdatetimetype.php b/kernel/classes/datatypes/ezdatetime/ezdatetimetype.php
index <HASH>..<HASH> 100644
--- a/kernel/classes/datatypes/ezdatetime/ezdatetimetype.php
+++ b/kernel/classes/datatypes/ezdatetime/ezdatetimetype.php
@@ -625,7 +625,7 @@ class eZDateTimeType extends eZDataType
 
             default:
             {
-                $default = null;
+                return array();
             }
         }
Fix EZP-<I>: ezdatetime with no default value causes class edit to fail

According to the other datatypes I have checked, it should return an empty array in this case.