diff --git a/commands/prepare.go b/commands/prepare.go
index 1053da97e3..c8a674157d 100644
--- a/commands/prepare.go
+++ b/commands/prepare.go
@@ -140,6 +140,12 @@ func (p *PrepareCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{
 	logger.Info("Detecting OS... ")
 	scan.InitServers(logger)
 
+	logger.Info("Checking sudo configuration... ")
+	if err := scan.CheckIfSudoNoPasswd(logger); err != nil {
+		logger.Errorf("Failed to sudo with nopassword via SSH. Define NOPASSWD in /etc/sudoers on target servers")
+		return subcommands.ExitFailure
+	}
+
 	logger.Info("Installing...")
 	if errs := scan.Prepare(); 0 < len(errs) {
 		for _, e := range errs {
diff --git a/scan/serverapi.go b/scan/serverapi.go
index bf4a985266..0bbc1d8371 100644
--- a/scan/serverapi.go
+++ b/scan/serverapi.go
@@ -369,7 +369,7 @@ func detectContainerOSesOnServer(containerHost osTypeInterface) (oses []osTypeIn
 
 // CheckIfSudoNoPasswd checks whether vuls can sudo with nopassword via SSH
 func CheckIfSudoNoPasswd(localLogger *logrus.Entry) error {
-	timeoutSec := 1 * 15
+	timeoutSec := 15
 	errs := parallelSSHExec(func(o osTypeInterface) error {
 		return o.checkIfSudoNoPasswd()
 	}, timeoutSec)