diff --git a/README.md b/README.md
index 80fa61b..001a5d0 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,24 @@ You can build the docker container by running:
 docker build .
 ```
 
+# Usage
+
+## Environment config
+
+* `NSM_NAME`                     - Name of ICMP Server (default: "icmp-server")
+* `NSM_LISTEN_ON`                - listen on socket (default: "listen.on.sock")
+* `NSM_CONNECT_TO`               - url to connect to (default: "unix:///var/lib/networkservicemesh/nsm.io.sock")
+* `NSM_MAX_TOKEN_LIFETIME`       - maximum lifetime of tokens (default: "10m")
+* `NSM_REGISTRY_CLIENT_POLICIES` - paths to files and directories that contain registry client policies (default: "etc/nsm/opa/common/.*.rego,etc/nsm/opa/registry/.*.rego,etc/nsm/opa/client/.*.rego")
+* `NSM_SERVICE_NAMES`            - Name of providing service (default: "icmp-responder")
+* `NSM_PAYLOAD`                  - Name of provided service payload (default: "ETHERNET")
+* `NSM_LABELS`                   - Endpoint labels
+* `NSM_CIDR_PREFIX`              - CIDR Prefix to assign IPs from (default: "169.254.0.0/16")
+* `NSM_REGISTER_SERVICE`         - if true then registers network service on startup (default: "true")
+* `NSM_LOG_LEVEL`                - Log level (default: "INFO")
+* `NSM_OPEN_TELEMETRY_ENDPOINT`  - OpenTelemetry Collector Endpoint (default: "otel-collector.observability.svc.cluster.local:4317")
+* `NSM_METRICS_EXPORT_INTERVAL`  - interval between mertics exports (default: "10s")
+
 # Testing
 
 ## Testing Docker container
@@ -72,4 +90,4 @@ docker run --privileged -e DLV_LISTEN_FORWARDER=:50000 -p 40000:40000 -p 50000:5
 ```
 
 Please note, the tests **start** the cmd, so until you connect to port 40000 with your debugger and walk the tests
-through to the point of running cmd, you will not be able to attach a debugger on port 50000 to the cmd.
\ No newline at end of file
+through to the point of running cmd, you will not be able to attach a debugger on port 50000 to the cmd.
diff --git a/main.go b/main.go
index f99bd0c..c298336 100644
--- a/main.go
+++ b/main.go
@@ -85,7 +85,7 @@ type Config struct {
 	CidrPrefix             cidr.Groups       `default:"169.254.0.0/16" desc:"CIDR Prefix to assign IPs from" split_words:"true"`
 	RegisterService        bool              `default:"true" desc:"if true then registers network service on startup" split_words:"true"`
 	LogLevel               string            `default:"INFO" desc:"Log level" split_words:"true"`
-	OpenTelemetryEndpoint  string            `default:"otel-collector.observability.svc.cluster.local:4317" desc:"OpenTelemetry Collector Endpoint"`
+	OpenTelemetryEndpoint  string            `default:"otel-collector.observability.svc.cluster.local:4317" desc:"OpenTelemetry Collector Endpoint" split_words:"true"`
 	MetricsExportInterval  time.Duration     `default:"10s" desc:"interval between mertics exports" split_words:"true"`
 }