diff --git a/server/etcdmain/help.go b/server/etcdmain/help.go
index 330f305069f4..8386feed4891 100644
--- a/server/etcdmain/help.go
+++ b/server/etcdmain/help.go
@@ -106,7 +106,7 @@ Member:
   --raft-write-timeout '` + rafthttp.DefaultConnWriteTimeout.String() + `'
     Write timeout set on each rafthttp connection
   --feature-gates ''
-    A set of key=value pairs that describe server level feature gates for alpha/experimental features. Options are:'` + strings.Join(features.NewDefaultServerFeatureGate("", nil).KnownFeatures(), ",") + `'
+    A set of key=value pairs that describe server level feature gates for alpha/experimental features. Options are:\n` + strings.Join(features.NewDefaultServerFeatureGate("", nil).KnownFeatures(), "\n") + `
 
 Clustering:
   --initial-advertise-peer-urls 'http://localhost:2380'