diff --git a/modules/mariadb/testdata/my.cnf b/modules/mariadb/testdata/my.cnf
index c5e11ebb49..3db92faa9c 100644
--- a/modules/mariadb/testdata/my.cnf
+++ b/modules/mariadb/testdata/my.cnf
@@ -10,7 +10,7 @@ read_buffer_size = 256K
 read_rnd_buffer_size = 256K
 net_buffer_length = 2K
 thread_stack = 512K
-skip-host-cache
+host_cache_size=0
 skip-name-resolve
 
 # Don't listen on a TCP/IP port at all. This can be a security enhancement,
diff --git a/modules/mysql/testdata/my_8.cnf b/modules/mysql/testdata/my_8.cnf
index 7eb6b0faf7..c4c6039b8a 100644
--- a/modules/mysql/testdata/my_8.cnf
+++ b/modules/mysql/testdata/my_8.cnf
@@ -22,7 +22,7 @@
 # this will increase compatibility with older clients. For background, see:
 # https://dev.mysql.com/doc/refman/8.1/en/server-system-variables.html#sysvar_default_authentication_plugin
 # default-authentication-plugin=mysql_native_password
-skip-host-cache
+host_cache_size=0
 skip-name-resolve
 datadir=/var/lib/mysql
 socket=/var/run/mysqld/mysqld.sock