diff --git a/server/modules/protocol/MySQL/MySQLClient/mysql_client.c b/server/modules/protocol/MySQL/MySQLClient/mysql_client.c
index 49695b136..df10a1d1f 100644
--- a/server/modules/protocol/MySQL/MySQLClient/mysql_client.c
+++ b/server/modules/protocol/MySQL/MySQLClient/mysql_client.c
@@ -1440,7 +1440,7 @@ static int route_by_statement(SESSION* session, uint64_t capabilities, GWBUF** p
 
                 if (rcap_type_required(capabilities, RCAP_TYPE_TRANSACTION_TRACKING))
                 {
-                    uint32_t *data = GWBUF_DATA(packetbuf);
+                    uint8_t *data = GWBUF_DATA(packetbuf);
 
                     if (MYSQL_GET_COMMAND(data) == MYSQL_COM_QUERY)
                     {