diff --git a/main.go b/main.go
index a7243be..8985b84 100644
--- a/main.go
+++ b/main.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"encoding/json"
+	"flag"
 	"fmt"
 	"os"
 	"os/exec"
@@ -42,6 +43,9 @@ func main() {
 	fmt.Println("#################################################")
 	fmt.Println()
 
+	uploadMissing := flag.Bool("upload-missing", os.Getenv("DS_CC_UPLOAD_MISSING") == "true", "true, to upload files to docspell that do not yet exist there")
+	flag.Parse()
+
 	// Read config from user profile
 	homeDir, err := os.UserHomeDir()
 	if err != nil {
@@ -86,8 +90,7 @@ func main() {
 	}
 
 	fmt.Println("Settings:")
-	uploadMissing := os.Getenv("DS_CC_UPLOAD_MISSING") == "true"
-	if uploadMissing {
+	if *uploadMissing {
 		fmt.Println("  - UPLOAD files?    YES")
 		fmt.Println("     files not existing in Docspell will be uploaded and will be re-checked in the next run.")
 	} else {
@@ -137,7 +140,7 @@ func main() {
 				}
 			} else {
 				fmt.Println("Files does not exist, yet")
-				if uploadMissing {
+				if *uploadMissing {
 					fmt.Print("...uploading file..")
 					cmd = exec.Command("dsc", "-f", "json", "upload", path)
 					output, err := cmd.Output()