diff --git a/application/models/Logbookadvanced_model.php b/application/models/Logbookadvanced_model.php
index dafac4d98..435467741 100644
--- a/application/models/Logbookadvanced_model.php
+++ b/application/models/Logbookadvanced_model.php
@@ -1332,6 +1332,10 @@ class Logbookadvanced_model extends CI_Model {
 			$skipqrzupdate = true;
 		} else {
 
+			if ($value == "null") {
+				$value = null;
+			}
+
 			$sql = "UPDATE ".$this->config->item('table_name')." JOIN station_profile ON ".$this->config->item('table_name').".station_id = station_profile.station_id SET " . $this->config->item('table_name').".".$column . " = ? WHERE " . $this->config->item('table_name').".col_primary_key in ? and station_profile.user_id = ?";
 
 			$query = $this->db->query($sql, array($value, json_decode($ids, true), $this->session->userdata('user_id')));