diff --git a/doc/install/binary.md b/doc/install/binary.md
index 530ac6aa..fb11af8b 100644
--- a/doc/install/binary.md
+++ b/doc/install/binary.md
@@ -28,7 +28,7 @@ Flags:
   --log-level="info"    Set log level ($LOG_LEVEL).
   --log-json            Enable JSON logging output ($LOG_JSON).
   --log-caller          Add file:line of the caller to log output ($LOG_CALLER).
-  --test-notif          Test notification settings.
+  --test-notif          Test notification settings ($TEST_NOTIF).
 ```
 
 ## Server configuration
diff --git a/doc/install/docker.md b/doc/install/docker.md
index ff8ac583..0c562706 100644
--- a/doc/install/docker.md
+++ b/doc/install/docker.md
@@ -24,6 +24,7 @@ Image: crazymax/diun:latest
 * `LOG_LEVEL` : Log level output (default `info`)
 * `LOG_JSON`: Enable JSON logging output (default `false`)
 * `LOG_CALLER`: Enable to add file:line of the caller (default `false`)
+* `TEST_NOTIF`: Enable to test notification settings on startup (default `false`)
 
 ## Volumes
 
diff --git a/internal/model/cli.go b/internal/model/cli.go
index 9e3489d1..f4cba612 100644
--- a/internal/model/cli.go
+++ b/internal/model/cli.go
@@ -10,5 +10,5 @@ type Cli struct {
 	LogLevel  string `kong:"name='log-level',env='LOG_LEVEL',default='info',help='Set log level.'"`
 	LogJSON   bool   `kong:"name='log-json',env='LOG_JSON',default='false',help='Enable JSON logging output.'"`
 	LogCaller bool   `kong:"name='log-caller',env='LOG_CALLER',default='false',help='Add file:line of the caller to log output.'"`
-	TestNotif bool   `kong:"name='test-notif',default='false',help='Test notification settings.'"`
+	TestNotif bool   `kong:"name='test-notif',env='TEST_NOTIF',default='false',help='Test notification settings.'"`
 }