diff --git a/data/Dockerfiles/dovecot/clean_q_aged.sh b/data/Dockerfiles/dovecot/clean_q_aged.sh
index 0550dabb..37ed1ff2 100755
--- a/data/Dockerfiles/dovecot/clean_q_aged.sh
+++ b/data/Dockerfiles/dovecot/clean_q_aged.sh
@@ -13,6 +13,6 @@ if ! [[ ${MAX_AGE} =~ ${NUM_REGEXP} ]] ; then
   exit 1
 fi
 
-TO_DELETE=$(mysql --socket=/var/run/mysqld/mysqld.sock -u ${DBUSER} -p${DBPASS} ${DBNAME} -e "SELECT COUNT(id) FROM quarantine WHERE created < NOW() - INTERVAL ${MAX_AGE//[!0-9]/} DAY" -BN)
-mysql --socket=/var/run/mysqld/mysqld.sock -u ${DBUSER} -p${DBPASS} ${DBNAME} -e "DELETE FROM quarantine WHERE created < NOW() - INTERVAL ${MAX_AGE//[!0-9]/} DAY"
+TO_DELETE=$(mysql --socket=/var/run/mysqld/mysqld.sock -u __DBUSER__ -p__DBPASS__ __DBNAME__ -e "SELECT COUNT(id) FROM quarantine WHERE created < NOW() - INTERVAL ${MAX_AGE//[!0-9]/} DAY" -BN)
+mysql --socket=/var/run/mysqld/mysqld.sock -u __DBUSER__ -p__DBPASS__ __DBNAME__ -e "DELETE FROM quarantine WHERE created < NOW() - INTERVAL ${MAX_AGE//[!0-9]/} DAY"
 echo "Deleted ${TO_DELETE} items from quarantine table (max age is ${MAX_AGE//[!0-9]/} days)"