diff --git a/debian/clickhouse-server.postinst b/debian/clickhouse-server.postinst
index 7db737dbbb3..4a1f4d9d387 100644
--- a/debian/clickhouse-server.postinst
+++ b/debian/clickhouse-server.postinst
@@ -4,6 +4,7 @@ set -e
 
 CLICKHOUSE_USER=${CLICKHOUSE_USER:=clickhouse}
 CLICKHOUSE_GROUP=${CLICKHOUSE_GROUP:=${CLICKHOUSE_USER}}
+# Please note that we don't support paths with whitespaces. This is rather ignorant.
 CLICKHOUSE_CONFDIR=${CLICKHOUSE_CONFDIR:=/etc/clickhouse-server}
 CLICKHOUSE_DATADIR=${CLICKHOUSE_DATADIR:=/var/lib/clickhouse}
 CLICKHOUSE_LOGDIR=${CLICKHOUSE_LOGDIR:=/var/log/clickhouse-server}