diff --git a/packages/compiler/bin/tempblot.ts b/packages/compiler/bin/tempblot.ts
index a8fdd43..5be947c 100755
--- a/packages/compiler/bin/tempblot.ts
+++ b/packages/compiler/bin/tempblot.ts
@@ -17,6 +17,13 @@ const args = parse(argv, {
   string: ["url"],
 });
 
+const [command] = args._;
+
+if (command !== getCmd.value) {
+  console.error(`Usage: tempblot ${getCmd.value} [--url <repository-url>]`);
+  process.exit(1);
+}
+
 const url =
   args.url ||
   ((await text({
diff --git a/packages/compiler/tests/bin.spec.ts b/packages/compiler/tests/bin.spec.ts
index dc61496..9a48200 100644
--- a/packages/compiler/tests/bin.spec.ts
+++ b/packages/compiler/tests/bin.spec.ts
@@ -63,7 +63,15 @@ test("the packed binary runs outside the project", async () => {
     mkdirSync(dirname(installedBinary), { recursive: true });
     symlinkSync(binaryPath, installedBinary);
 
-    const cli = await render(installedBinary, [], {
+    const invalidCommandCli = await render(installedBinary, ["compile"], {
+      cwd: join(temporaryRoot, "consumer"),
+    });
+
+    expect(
+      await invalidCommandCli.findByError("Usage: tempblot get"),
+    ).toHaveErrorMessage("Usage: tempblot get [--url <repository-url>]");
+
+    const cli = await render(installedBinary, ["get"], {
       cwd: join(temporaryRoot, "consumer"),
     });