diff --git a/mysql-test/suite/mariabackup/slave_provision_nolock.cnf b/mysql-test/suite/mariabackup/slave_provision_nolock.cnf
index d8326a5ccb8..bba1d2a73c6 100644
--- a/mysql-test/suite/mariabackup/slave_provision_nolock.cnf
+++ b/mysql-test/suite/mariabackup/slave_provision_nolock.cnf
@@ -3,6 +3,9 @@
 [mysqld.1]
 log-slave-updates
 loose-innodb
+# Test does a lot of DML during the backup, larger than 10M log is needed for
+# mariabackup to always be able to copy all that it needs.
+loose-innodb_log_file_size=       96M
 
 [mysqld.2]
 log-slave-updates