diff --git a/etcdctl/ctlv3/command/completion_command.go b/etcdctl/ctlv3/command/completion_command.go
index 66a213cd3a60..c3f1d43480a7 100644
--- a/etcdctl/ctlv3/command/completion_command.go
+++ b/etcdctl/ctlv3/command/completion_command.go
@@ -65,7 +65,7 @@ PowerShell:
 `,
 		DisableFlagsInUseLine: true,
 		ValidArgs:             []string{"bash", "zsh", "fish", "powershell"},
-		Args:                  cobra.ExactValidArgs(1),
+		Args:                  cobra.MatchAll(cobra.ExactArgs(1)),
 		Run: func(cmd *cobra.Command, args []string) {
 			switch args[0] {
 			case "bash":