diff --git a/packages/clickhouse-server.service b/packages/clickhouse-server.service
index 037be826b97..bff2bf8fc2d 100644
--- a/packages/clickhouse-server.service
+++ b/packages/clickhouse-server.service
@@ -24,6 +24,8 @@ RuntimeDirectory=%p
 ExecStart=/usr/bin/clickhouse-server --config=/etc/clickhouse-server/config.xml --pid-file=%t/%p/%p.pid
 # Minus means that this file is optional.
 EnvironmentFile=-/etc/default/%p
+# Bring back /etc/default/clickhouse for backward compatibility
+EnvironmentFile=-/etc/default/clickhouse
 LimitCORE=infinity
 LimitNOFILE=500000
 CapabilityBoundingSet=CAP_NET_ADMIN CAP_IPC_LOCK CAP_SYS_NICE CAP_NET_BIND_SERVICE