diff --git a/lib/db/clickhouse.js b/lib/db/clickhouse.js
index 6f3a32a0..f934708f 100644
--- a/lib/db/clickhouse.js
+++ b/lib/db/clickhouse.js
@@ -1366,6 +1366,9 @@ const rawRequest = async (query, data, database, config) => {
     if (data && !(Buffer.isBuffer(data) || data instanceof Uint8Array || typeof data === 'string')) {
       throw new Error('data must be Buffer, Uint8Array or String: currently the data is: ' + typeof data)
     }
+    if (typeof data === 'string') {
+      data = Buffer.from(data, 'utf8')
+    }
     if (typeof query !== 'string') {
       throw new Error('query must be String: currently the query is: ' + typeof query)
     }