diff --git a/mysql-test/suite/sys_vars/t/secure_file_priv.test b/mysql-test/suite/sys_vars/t/secure_file_priv.test
index 7a534e7d6e4..3e2a4fa467a 100644
--- a/mysql-test/suite/sys_vars/t/secure_file_priv.test
+++ b/mysql-test/suite/sys_vars/t/secure_file_priv.test
@@ -9,7 +9,7 @@ SHOW VARIABLES LIKE 'secure_file_priv';
 # Doing this in a portable manner is difficult but we should be able to
 # count on the depth of the directory hierarchy used. Three steps up from
 # the datadir is the 'mysql_test' directory.
---let $PROTECTED_FILE=`SELECT concat(@@datadir,'/../../../bug50373.txt')`;
+--let $PROTECTED_FILE=`SELECT concat(@@datadir,'/../../../bug50373.txt')`
 --eval SELECT * FROM t1 INTO OUTFILE '$PROTECTED_FILE';
 DELETE FROM t1;
 --eval LOAD DATA INFILE '$PROTECTED_FILE' INTO TABLE t1;
diff --git a/mysql-test/t/mysqltest.test b/mysql-test/t/mysqltest.test
index 597adffd035..c054b163c0c 100644
--- a/mysql-test/t/mysqltest.test
+++ b/mysql-test/t/mysqltest.test
@@ -497,10 +497,19 @@ remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
 #
 # Extra text after ``
 #
+# Cannot use exec echo here as ` may or may not need to be escaped
+--write_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql
+let $x= `select 1` BOO ;
+EOF
 --error 1
--- exec echo "let \$x= \`select 1\` BOO ;" | $MYSQL_TEST 2>&1
+--exec $MYSQL_TEST < $MYSQLTEST_VARDIR/tmp/mysqltest.sql 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
+--write_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql
+--let $x= `select 1`;
+EOF
 --error 1
--- exec echo "--let \$x= \`select 1\`;" | $MYSQL_TEST 2>&1
+--exec $MYSQL_TEST < $MYSQLTEST_VARDIR/tmp/mysqltest.sql 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
 --write_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql
 # Missing ; in next line should be detected and cause failure
 let $x= `select 1`