diff --git a/cmd/root.go b/cmd/root.go
index 6b648628..a025b2ac 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -2,6 +2,7 @@ package cmd
 
 import (
 	"fmt"
+	"slices"
 
 	logconfig "github.com/kubewarden/audit-scanner/internal/log"
 	"github.com/kubewarden/audit-scanner/internal/policies"
@@ -30,7 +31,7 @@ var level logconfig.Level
 var logFormat string
 
 // list of supported format of logs to stdout & stderr
-var logFormatSupportedFormats = [1]string{"json"}
+var logFormatSupportedFormats = []string{"json"}
 
 // list of namespaces to be skipped from scan
 var skippedNs []string
@@ -72,10 +73,7 @@ There will be a ClusterPolicyReport with results for cluster-wide resources.`,
 		if err != nil {
 			return err
 		}
-		switch logFormat {
-		// TODO use slices package in go 1.21
-		case "json": // skip
-		default:
+		if slices.Contains(logFormatSupportedFormats, logFormat) {
 			return fmt.Errorf("passed log-fmt not supported. Please select one of the supported formats: %v", logFormatSupportedFormats)
 		}