diff --git a/templates/application/occ.erb b/templates/application/occ.erb
index fb744c9..50c6958 100755
--- a/templates/application/occ.erb
+++ b/templates/application/occ.erb
@@ -15,12 +15,16 @@ if [[ "x${oc_list}" != "x" ]]; then
         done
 fi
 
-if [[ ${1} == 'maintanance:mode' ]]; then
-  docker exec -ti ${MY_VARS} -u www-data ${container} sed -ci "s/config_is_read_only\(.\) => true,/config_is_read_only\1 => false,/" /var/www/html/config/config.php
+if [[ ${1} == 'maintenance:mode' ]]; then
+  docker exec -ti ${MY_VARS} -u www-data ${container} sh -c 'sed "s/config_is_read_only\(.\) => true,/config_is_read_only\1 => false,/" /var/www/html/config/config.php > /var/www/html/config/config.php.tmp'
+  docker exec -ti ${MY_VARS} -u www-data ${container} cp /var/www/html/config/config.php.tmp  /var/www/html/config/config.php
+  docker exec -ti ${MY_VARS} -u www-data ${container} rm /var/www/html/config/config.php.tmp
 fi
 
 docker exec -ti ${MY_VARS} -u www-data ${container} php --define apc.enable_cli=1 /var/www/html/occ "$@"
 
-if [[ ${1} == 'maintanance:mode' ]]; then
-  docker exec -ti ${MY_VARS} -u www-data ${container} sed -ci "s/config_is_read_only\(.\) => false,/config_is_read_only\1 => true,/" /var/www/html/config/config.php
+if [[ ${1} == 'maintenance:mode' ]]; then
+  docker exec -ti ${MY_VARS} -u www-data ${container} sh -c 'sed "s/config_is_read_only\(.\) => false,/config_is_read_only\1 => true,/" /var/www/html/config/config.php > /var/www/html/config/config.php.tmp'
+  docker exec -ti ${MY_VARS} -u www-data ${container} cp /var/www/html/config/config.php.tmp  /var/www/html/config/config.php
+  docker exec -ti ${MY_VARS} -u www-data ${container} rm /var/www/html/config/config.php.tmp
 fi