diff --git a/src/infrastructure/storage/lisk/LiskDAO.php b/src/infrastructure/storage/lisk/LiskDAO.php
index 94eef7d16..fa0802031 100644
--- a/src/infrastructure/storage/lisk/LiskDAO.php
+++ b/src/infrastructure/storage/lisk/LiskDAO.php
@@ -1698,6 +1698,9 @@ abstract class LiskDAO extends Phobject {
             if ($deserialize) {
               $data[$col] = json_decode($data[$col], true);
             } else {
+              foreach ($data[$col] as &$value) {
+                $value = iconv("UTF-8","UTF-8//IGNORE",$value);
+              }
               $data[$col] = phutil_json_encode($data[$col]);
             }
             break;