diff --git a/packages/clickhouse-server.init b/packages/clickhouse-server.init
index 1695f6286b8..13aeffe13a7 100755
--- a/packages/clickhouse-server.init
+++ b/packages/clickhouse-server.init
@@ -47,9 +47,10 @@ CLICKHOUSE_PIDFILE="$CLICKHOUSE_PIDDIR/$PROGRAM.pid"
 # Some systems lack "flock"
 command -v flock >/dev/null && FLOCK=flock
 
-# Override defaults from optional config file
+# Override defaults from optional config file and export them automatically
+set -a
 test -f /etc/default/clickhouse && . /etc/default/clickhouse
-
+set +a
 
 die()
 {