diff --git a/types/yargs/yargs-tests.ts b/types/yargs/yargs-tests.ts
index 44e62d66dd..2c0756d427 100644
--- a/types/yargs/yargs-tests.ts
+++ b/types/yargs/yargs-tests.ts
@@ -566,7 +566,7 @@ function Argv$commandObject() {
                 alias: "string",
                 array: true,
                 boolean: true,
-                choices: ["a", "b", "c"],
+                choices: [undefined, false, "a", "b", "c"],
                 coerce: f => JSON.stringify(f),
                 config: true,
                 configParser: t => JSON.parse(fs.readFileSync(t, "utf8")),