diff --git a/etcdmain/config.go b/etcdmain/config.go
index 471c73480fb2..96146b175c92 100644
--- a/etcdmain/config.go
+++ b/etcdmain/config.go
@@ -216,6 +216,7 @@ func newConfig() *config {
 	// experimental
 	fs.BoolVar(&cfg.ec.ExperimentalInitialCorruptCheck, "experimental-initial-corrupt-check", cfg.ec.ExperimentalInitialCorruptCheck, "Enable to check data corruption before serving any client/peer traffic.")
 	fs.DurationVar(&cfg.ec.ExperimentalCorruptCheckTime, "experimental-corrupt-check-time", cfg.ec.ExperimentalCorruptCheckTime, "Duration of time between cluster corruption check passes.")
+	fs.BoolVar(&cfg.ec.ExperimentalPreVote, "experimental-pre-vote", cfg.ec.ExperimentalPreVote, "Enable to run an additional Raft election phase.")
 
 	// ignored
 	for _, f := range cfg.ignored {
diff --git a/etcdmain/help.go b/etcdmain/help.go
index 6349a7e863b5..570fb3bc6ef5 100644
--- a/etcdmain/help.go
+++ b/etcdmain/help.go
@@ -195,5 +195,7 @@ experimental flags:
 		duration of time between cluster corruption check passes.
 	--experimental-enable-v2v3 ''
 		serve v2 requests through the v3 backend under a given prefix.
+	--experimental-pre-vote 'false'
+		enable to run an additional Raft election phase.
 `
 )