diff --git a/runner/main/modules/docker-database/mysqli.d/primary/conf.d/primary.cnf b/runner/main/modules/docker-database/mysqli.d/primary/conf.d/primary.cnf
index 5309d41..03abf08 100644
--- a/runner/main/modules/docker-database/mysqli.d/primary/conf.d/primary.cnf
+++ b/runner/main/modules/docker-database/mysqli.d/primary/conf.d/primary.cnf
@@ -6,7 +6,7 @@ innodb_file_per_table = 1
 
 character-set-server = utf8mb4
 collation-server = utf8mb4_bin
-skip-character-set-client-handshake
+skip-character-set-client-handshake = 1
 
 key_buffer_size = 768M
 table_open_cache = 12000
diff --git a/runner/main/modules/docker-database/mysqli.d/replica/conf.d/moodle.cnf b/runner/main/modules/docker-database/mysqli.d/replica/conf.d/moodle.cnf
index f1fff2e..1b1490b 100644
--- a/runner/main/modules/docker-database/mysqli.d/replica/conf.d/moodle.cnf
+++ b/runner/main/modules/docker-database/mysqli.d/replica/conf.d/moodle.cnf
@@ -6,7 +6,7 @@ innodb_file_per_table = 1
 
 character-set-server = utf8mb4
 collation-server = utf8mb4_bin
-skip-character-set-client-handshake
+skip-character-set-client-handshake = 1
 
 key_buffer_size = 768M
 table_open_cache = 12000