diff --git a/install.sh b/install.sh
index 3c79e952de..91f4cbdb19 100755
--- a/install.sh
+++ b/install.sh
@@ -728,7 +728,9 @@ WantedBy=multi-user.target
 
 [Service]
 Type=${SYSTEMD_TYPE}
-EnvironmentFile=${FILE_K3S_ENV}
+EnvironmentFile=-/etc/default/%N
+EnvironmentFile=-/etc/sysconfig/%N
+EnvironmentFile=-${FILE_K3S_ENV}
 KillMode=process
 Delegate=yes
 # Having non-zero Limit*s causes performance problems due to accounting overhead
diff --git a/k3s.service b/k3s.service
index fba6c19046..6ea1f8a4a5 100644
--- a/k3s.service
+++ b/k3s.service
@@ -6,6 +6,8 @@ Wants=network-online.target
 
 [Service]
 Type=notify
+EnvironmentFile=-/etc/default/%N
+EnvironmentFile=-/etc/sysconfig/%N
 EnvironmentFile=-/etc/systemd/system/k3s.service.env
 ExecStart=/usr/local/bin/k3s server
 KillMode=process