diff --git a/README.md b/README.md
index b8d6739..d482e0c 100644
--- a/README.md
+++ b/README.md
@@ -36,10 +36,10 @@ Options:
   -c, --category                          [string] [required] [choices: "other", "bridge", "fan", "garage", "lightbulb", "doorLock", "outlet", "switch", "thermostat", "sensor", "securitySystem", "door", "window", "windowCovering", "programmableSwitch", "rangeExtender", "ipCamera", "videoDoorBell", "airPurifier", "heater", "airConditioner", "humidifier", "dehumidifier", "appleTv", "speaker", "airport", "sprinkler", "faucet", "showerHead", "television", "targetController"]
   -o, --output                            [string] [default: "qrcode.svg"]
   -p, --pairingCode                       [string] [required]
-  -s, --setupId                           [string] [default: ""]
+  -s, --setupId                           [string] [required]
 
 Examples:
-  npx homekit-qrcode --category=switch --pairingCode=01234567  Generate a QR code for a HomeKit switch
+  npx homekit-qrcode --category=switch --pairingCode=84131633 --setupId=3QYT Generate a QR code for a HomeKit switch
 ```
 
 ### Output
diff --git a/docs/qrcode.png b/docs/qrcode.png
index c3f13a7..1dedc11 100644
Binary files a/docs/qrcode.png and b/docs/qrcode.png differ
diff --git a/src/index.ts b/src/index.ts
index bc756f9..0c4cf1c 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -8,7 +8,7 @@ import { argv } from './yargs';
 const main = async () => {
   const { category, output, pairingCode, setupId } = argv;
 
-  const categoryId = CATEGORIES.get(category);
+  const categoryId = CATEGORIES.get(category) as number;
   const filename = getFilename(output);
   const qrCodeSvg = await generateQrCodeAsSvg(categoryId, pairingCode, setupId);
   const file = createLabelAsSvg(pairingCode, qrCodeSvg);
diff --git a/src/qrcode.ts b/src/qrcode.ts
index 3aad6a2..86227da 100644
--- a/src/qrcode.ts
+++ b/src/qrcode.ts
@@ -2,13 +2,13 @@ import qrcode from 'qrcode';
 import { createSetupUri } from './homekit';
 
 const QR_CODE_STRING_OPTIONS: qrcode.QRCodeToStringOptions = {
-  errorCorrectionLevel: 'Q',
+  errorCorrectionLevel: 'quartile',
   margin: 0,
   type: 'svg',
   version: 2,
 };
 
-export const generateQrCodeAsSvg = async (category = 0, password = '', setupId = ''): Promise<string> => {
+export const generateQrCodeAsSvg = async (category: number, password: string, setupId: string): Promise<string> => {
   const setupUri = createSetupUri(category, password, setupId);
   return qrcode.toString(setupUri, QR_CODE_STRING_OPTIONS);
 };
diff --git a/src/yargs.ts b/src/yargs.ts
index eea4cd9..adde4a1 100644
--- a/src/yargs.ts
+++ b/src/yargs.ts
@@ -30,8 +30,7 @@ export const argv = yargs(process.argv.slice(2))
     },
     setupId: {
       alias: 's',
-      demandOption: false,
-      default: '',
+      demandOption: true,
       type: 'string',
     },
   })
@@ -43,5 +42,8 @@ export const argv = yargs(process.argv.slice(2))
     }
   })
   .usage('Usage: homekit-qrcode [options]')
-  .example('npx homekit-qrcode --category=switch --pairingCode=01234567', 'Generate a QR code for a HomeKit switch')
+  .example(
+    'npx homekit-qrcode --category=switch --pairingCode=84131633 --setupId=3QYT',
+    'Generate a QR code for a HomeKit switch',
+  )
   .parseSync();