diff --git a/mysql-test/t/mysql.test b/mysql-test/t/mysql.test
index 829be665e09..4270d8dec80 100644
--- a/mysql-test/t/mysql.test
+++ b/mysql-test/t/mysql.test
@@ -138,8 +138,8 @@ drop table t1;
 #
 # Bug #20328: mysql client interprets commands in comments
 #
---exec $MYSQL -e 'help' > $MYSQLTEST_VARDIR/tmp/bug20328_1.result
---exec $MYSQL -e 'help ' > $MYSQLTEST_VARDIR/tmp/bug20328_2.result
+--exec $MYSQL -e "help" > $MYSQLTEST_VARDIR/tmp/bug20328_1.result
+--exec $MYSQL -e "help " > $MYSQLTEST_VARDIR/tmp/bug20328_2.result
 --exec diff $MYSQLTEST_VARDIR/tmp/bug20328_1.result $MYSQLTEST_VARDIR/tmp/bug20328_2.result
 
 #