diff --git a/mysql-test/mysql-test-run.pl b/mysql-test/mysql-test-run.pl
index 8093e7ecb6f..7b73782eedc 100755
--- a/mysql-test/mysql-test-run.pl
+++ b/mysql-test/mysql-test-run.pl
@@ -3365,6 +3365,7 @@ sub mysql_install_db {
   mtr_add_arg($args, "--tmpdir=%s", "$opt_vardir/tmp/");
   mtr_add_arg($args, "--core-file");
   mtr_add_arg($args, "--console");
+  mtr_add_arg($args, "--character-set-server=latin1");
 
   if ( $opt_debug )
   {