diff --git a/cmd_wait.go b/cmd_wait.go
index 53f8bf8..35b24ea 100644
--- a/cmd_wait.go
+++ b/cmd_wait.go
@@ -9,9 +9,9 @@ import (
 )
 
 type waitCmd struct {
-	_ struct{} `help:"[--wait] {Title}"`
+	_ struct{} `help:"[--close] {Title}"`
 
-	Closed    bool
+	Closed    bool         `help:"wait until the window is closed"`
 	Intervals gli.Duration `cli:"intervals,i=DURATION" default:"1s"`
 }
 
diff --git a/vvin.go b/vvin.go
index f74991e..b7ed358 100644
--- a/vvin.go
+++ b/vvin.go
@@ -33,7 +33,7 @@ type globalCmd struct {
 	Resize   resizeCmd  `cli:"resize,move,mv" help:"resize/move"`
 	Alpha    alphaCmd   `cli:"alpha"   help:"set alpha 0%(transparent) - 100%(opaque)"`
 	Topmost  topmostCmd `cli:"topmost" help:"set always on top/restore"`
-	Wait     waitCmd    `cli:"wait"`
+	Wait     waitCmd    `cli:"wait" help:"wait for a window is opened/closed ([--close] {Title})"`
 
 	targetHandle syscall.Handle