diff --git a/README.md b/README.md
index 45b6837..c35cee3 100644
--- a/README.md
+++ b/README.md
@@ -19,8 +19,8 @@ Expected environment variables:
 | --- | --- | --- |
 | `TS_AUTHKEY` | `tskey-auth-somestring-somelongerstring` | used for unattened auth of the new node, get one [here](https://login.tailscale.com/admin/settings/keys) |
 | `TS_HOSTNAME` | `my-app` | optional Tailscale hostname for the new node |
-| `TS_STATEDIR` | `/var/lib/tailscale/` | required directory for storing Tailscale state, this should be mounted to the container for persistence |
-| `TS_OPT` | `--verbose=1` | optional additional [flags](https://tailscale.com/kb/1278/tailscaled#flags-to-tailscaled) for `tailscaled` |
+| `TS_STATE_DIR` | `/var/lib/tailscale/` | required directory for storing Tailscale state, this should be mounted to the container for persistence |
+| `TS_TAILSCALED_EXTRA_ARGS` | `--verbose=1` | optional additional [flags](https://tailscale.com/kb/1278/tailscaled#flags-to-tailscaled) for `tailscaled` |
 | `TS_SERVE_PORT` | `8080` | optional application port to expose with [Tailscale Serve](https://tailscale.com/kb/1312/serve) |
 | `TS_FUNNEL` | `1` | if set (to anything), will proxy `TS_SERVE_PORT` **publicly** with [Tailscale Funnel](https://tailscale.com/kb/1223/funnel) |
 
diff --git a/docker-compose-example/.env_template b/docker-compose-example/.env_template
index e5295bd..ad85747 100644
--- a/docker-compose-example/.env_template
+++ b/docker-compose-example/.env_template
@@ -1,6 +1,6 @@
 # Rename to .env
 TS_AUTHKEY=""       # Required Tailscale auth key
 TS_HOSTNAME=""      # Optional hostname for this node
-TS_OPT=""           # Optional additional arguments for tailscaled
+TS_TAILSCALED_EXTRA_ARGS=""           # Optional additional arguments for tailscaled
 TS_SERVE_PORT=""    # Optional backend port to proxy with tailscale serve
 TS_FUNNEL=""        # If set, serve publicly with tailscale funnel
\ No newline at end of file
diff --git a/docker-compose-example/docker-compose.yml b/docker-compose-example/docker-compose.yml
index 446e477..15dc660 100644
--- a/docker-compose-example/docker-compose.yml
+++ b/docker-compose-example/docker-compose.yml
@@ -6,7 +6,7 @@ services:
     environment:
       TS_AUTHKEY: ${TS_AUTHKEY:?err} # from https://login.tailscale.com/admin/settings/authkeys
       TS_HOSTNAME: ${TS_HOSTNAME:-ts-docker}
-      TS_STATEDIR: "/var/lib/tailscale/" # store ts state in a local volume
+      TS_STATE_DIR: "/var/lib/tailscale/" # store ts state in a local volume
       TS_SERVE_PORT: ${TS_SERVE_PORT:-} # optional port to proxy with tailscale serve (ex: '80')
       TS_FUNNEL: ${TS_FUNNEL:-} # if set, serve publicly with tailscale funnel
     volumes:
diff --git a/image/start.sh b/image/start.sh
index 620fca9..484384b 100644
--- a/image/start.sh
+++ b/image/start.sh
@@ -1,7 +1,7 @@
 #!/bin/ash
 trap 'kill -TERM $PID' TERM INT
 echo "Starting Tailscale daemon"
-tailscaled --tun=userspace-networking --statedir="${TS_STATEDIR}" ${TS_OPT} &
+tailscaled --tun=userspace-networking --statedir="${TS_STATE_DIR}" ${TS_TAILSCALED_EXTRA_ARGS} &
 PID=$!
 until tailscale up --authkey="${TS_AUTHKEY}" --hostname="${TS_HOSTNAME}"; do
   sleep 0.1
diff --git a/k8s-example/deployment.yaml b/k8s-example/deployment.yaml
index 67ebfa8..3fb819e 100644
--- a/k8s-example/deployment.yaml
+++ b/k8s-example/deployment.yaml
@@ -19,7 +19,7 @@ spec:
               value: "${TS_AUTHKEY:-err}"
             - name: TS_HOSTNAME
               value: "${TS_HOSTNAME:-ts-docker}"
-            - name: TS_STATEDIR
+            - name: TS_STATE_DIR
               value: "/var/lib/tailscale"
             - name: TS_SERVE_PORT
               value: "${TS_SERVE_PORT:-}"