diff --git a/files/build_templates/swss.service.j2 b/files/build_templates/swss.service.j2
index f383a886eb..ed6b852f18 100644
--- a/files/build_templates/swss.service.j2
+++ b/files/build_templates/swss.service.j2
@@ -18,7 +18,6 @@ ExecStartPre=/usr/bin/docker exec database redis-cli -n 1 FLUSHDB
 ExecStartPre=/usr/bin/docker exec database redis-cli -n 2 FLUSHDB
 
 {% if sonic_asic_platform == 'mellanox' %}
-Environment=FAST_BOOT=1
 TimeoutStartSec=3min
 ExecStartPre=/usr/bin/mst start
 ExecStartPre=/usr/bin/mlnx-fw-upgrade.sh