diff --git a/_class/class_user_parent.php b/_class/class_user_parent.php
index 9006532..496207d 100755
--- a/_class/class_user_parent.php
+++ b/_class/class_user_parent.php
@@ -109,6 +109,10 @@ class user_parent {
 		global $sql;
 		//beilleszti AB-ba
 		//visszaadja az ID-t
+
+		if ($_email == '') $_email = 'null'; 
+		if ($_facebook == '') $_facebook = 'null'; 
+		if ($_phone == '') $_phone = 'null'; 
 		
 		return $sql->insert_into('user_parent', 
 			array(
@@ -122,6 +126,9 @@ class user_parent {
 
 	public static function update_parent($_parent_value_array, $_up_id) {
 		global $sql;
+		foreach ($_parent_value_array as $index => $value) {
+			if ($value == '') $_parent_value_array[$index] = 'null';
+		}
 		$sql->update_table('user_parent', $_parent_value_array, array('up_id' => $_up_id));
 	}
 }