diff --git a/.changeset/tender-emus-eat.md b/.changeset/tender-emus-eat.md
new file mode 100644
index 000000000000..bdf084fdb67a
--- /dev/null
+++ b/.changeset/tender-emus-eat.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+fix: Add missing --watch flag for astro check when running astro check --help
diff --git a/packages/astro/src/cli/check/index.ts b/packages/astro/src/cli/check/index.ts
index 83226db1c61d..10840aed103b 100644
--- a/packages/astro/src/cli/check/index.ts
+++ b/packages/astro/src/cli/check/index.ts
@@ -89,7 +89,10 @@ export async function check(
 			commandName: 'astro check',
 			usage: '[...flags]',
 			tables: {
-				Flags: [['--help (-h)', 'See all available flags.']],
+				Flags: [
+					['--watch', 'Watch Astro files for changes and re-run checks.'],
+					['--help (-h)', 'See all available flags.']
+				],
 			},
 			description: `Runs diagnostics against your project and reports errors to the console.`,
 		});