MySQL Unknown collation: utf8mb4_unicode_520_ci

When i restore a MySQL database backup taken on MairaDB 10 on MySQL 5.5, i get error

root@48b55e4d9b35:/home/boby# mysql -u root -pflashwebhost wp < wp.sql
ERROR 1273 (HY000) at line 356: Unknown collation: 'utf8mb4_unicode_520_ci'
root@48b55e4d9b35:/home/boby# 

To fix this, i changed all instance of utf8mb4_unicode_520_ci in the SQL backup file with utf8mb4_unicode_ci with sed.

sed -i 's/utf8mb4_unicode_520_ci/utf8mb4_unicode_ci/g'  wp.sql

mysql