diff --git a/.res/compose/docker-compose.yml b/.res/compose/docker-compose.yml
index e9ce14f8..74e9f570 100644
--- a/.res/compose/docker-compose.yml
+++ b/.res/compose/docker-compose.yml
@@ -11,5 +11,4 @@ services:
       - "TZ=Europe/Paris"
       - "LOG_LEVEL=info"
       - "LOG_JSON=false"
-      - "RUN_STARTUP=false"
     restart: always
diff --git a/README.md b/README.md
index d942d0ac..29aa96ac 100644
--- a/README.md
+++ b/README.md
@@ -70,7 +70,6 @@ Flags:
   --log-level="info"  Set log level.
   --log-json          Enable JSON logging output.
   --log-caller        Enable to add file:line of the caller.
-  --run-startup       Run on startup.
   --docker            Enable Docker mode.
   --version           Show application version.
 ```
@@ -86,7 +85,6 @@ Flags:
 * `--log-level <level>` : Log level output. _Optional_. (default: `info`).
 * `--log-json` : Enable JSON logging output. _Optional_. (default: `false`).
 * `--log-caller` : Enable to add file:line of the caller. _Optional_. (default: `false`).
-* `--run-startup` : Run on startup. _Optional_. (default: `false`).
 
 ## Configuration
 
@@ -221,7 +219,6 @@ Environment variables can be used within your container :
 * `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`)
-* `RUN_STARTUP`: Run on startup (default `false`)
 
 Docker compose is the recommended way to run this image. Copy the content of folder [.res/compose](.res/compose) in `/opt/diun/` on your host for example. Edit the compose and config file with your preferences and run the following commands :
 
@@ -237,7 +234,6 @@ $ docker run -d --name diun \
   -e "TZ=Europe/Paris" \
   -e "LOG_LEVEL=info" \
   -e "LOG_JSON=false" \
-  -e "RUN_STARTUP=false" \
   -v "$(pwd)/data:/data" \
   -v "$(pwd)/diun.yml:/diun.yml:ro" \
   crazymax/diun:latest
diff --git a/cmd/main.go b/cmd/main.go
index 431a8208..743d6d10 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -30,7 +30,6 @@ func main() {
 	kingpin.Flag("log-level", "Set log level.").Envar("LOG_LEVEL").Default("info").StringVar(&flags.LogLevel)
 	kingpin.Flag("log-json", "Enable JSON logging output.").Envar("LOG_JSON").Default("false").BoolVar(&flags.LogJson)
 	kingpin.Flag("log-caller", "Enable to add file:line of the caller.").Envar("LOG_CALLER").Default("false").BoolVar(&flags.LogCaller)
-	kingpin.Flag("run-startup", "Run on startup.").Envar("RUN_STARTUP").Default("false").BoolVar(&flags.RunStartup)
 	kingpin.Flag("docker", "Enable Docker mode.").Envar("DOCKER").Default("false").BoolVar(&flags.Docker)
 	kingpin.UsageTemplate(kingpin.CompactUsageTemplate).Version(version).Author("CrazyMax")
 	kingpin.CommandLine.Name = "diun"
diff --git a/internal/app/diun.go b/internal/app/diun.go
index 9aff3d35..a871e878 100644
--- a/internal/app/diun.go
+++ b/internal/app/diun.go
@@ -53,9 +53,7 @@ func (di *Diun) Start() error {
 	var err error
 
 	// Run on startup
-	if di.cfg.Flags.RunStartup {
-		di.Run()
-	}
+	di.Run()
 
 	// Init scheduler
 	di.jobID, err = di.cron.AddJob(di.cfg.Watch.Schedule, di)
diff --git a/internal/model/flags.go b/internal/model/flags.go
index ce372c1b..8b52fa88 100644
--- a/internal/model/flags.go
+++ b/internal/model/flags.go
@@ -2,11 +2,10 @@ package model
 
 // Flags holds flags from command line
 type Flags struct {
-	Cfgfile    string
-	Timezone   string
-	LogLevel   string
-	LogJson    bool
-	LogCaller  bool
-	RunStartup bool
-	Docker     bool
+	Cfgfile   string
+	Timezone  string
+	LogLevel  string
+	LogJson   bool
+	LogCaller bool
+	Docker    bool
 }