diff --git a/administrator/components/com_fields/Table/FieldTable.php b/administrator/components/com_fields/Table/FieldTable.php
index 8e3ec9d0ec336..102498216a647 100644
--- a/administrator/components/com_fields/Table/FieldTable.php
+++ b/administrator/components/com_fields/Table/FieldTable.php
@@ -143,16 +143,14 @@ public function check()
 		}
 		else
 		{
+			$this->modified_time = $this->getDbo()->getNullDate();
+			$this->modified_by = 0;
+
 			if (!(int) $this->created_time)
 			{
 				$this->created_time = $date->toSql();
 			}
 
-			if (!(int) $this->modified_time)
-			{
-				$this->modified_time = $date->toSql();
-			}
-
 			if (empty($this->created_user_id))
 			{
 				$this->created_user_id = $user->get('id');
diff --git a/administrator/components/com_fields/Table/GroupTable.php b/administrator/components/com_fields/Table/GroupTable.php
index 37284c4fcdaa5..e4d1ed348ec4a 100644
--- a/administrator/components/com_fields/Table/GroupTable.php
+++ b/administrator/components/com_fields/Table/GroupTable.php
@@ -102,6 +102,9 @@ public function check()
 		}
 		else
 		{
+			$this->modified = $this->getDbo()->getNullDate();
+			$this->modified_by = 0;
+
 			if (!(int) $this->created)
 			{
 				$this->created = $date->toSql();