diff --git a/lib/BankLetter.js b/lib/BankLetter.js
index 1221b22..5c77a3b 100644
--- a/lib/BankLetter.js
+++ b/lib/BankLetter.js
@@ -13,10 +13,8 @@ const registerHelpers = () => {
 	handlebars.registerHelper('now', () => moment().format('HH:mm:ss'));
 
 	handlebars.registerHelper('keyExponentBits', k => Buffer.byteLength(k.e()) * 8);
-	// handlebars.registerHelper('keyExponentBits', k => Buffer.byteLength(new BN(k.key.keyPair.e).toBuffer()) * 8);
 
-	handlebars.registerHelper('keyModulusBits', k => k.key.getKeySize());
-	// return Buffer.byteLength(new BN(k.key.keyPair.e).toBuffer()) * 8;
+	handlebars.registerHelper('keyModulusBits', k => k.size());
 
 	handlebars.registerHelper('keyExponent', k => k.e('hex'));
 
@@ -24,7 +22,6 @@ const registerHelpers = () => {
 
 	handlebars.registerHelper('sha256', (k) => {
 		const digest = Buffer.from(Crypto.digestPublicKey(k), 'base64').toString('HEX');
-		// const digest = Buffer.from(k.publicDigest(), 'base64').toString('HEX');
 		return digest.toUpperCase().match(/.{1,2}/g).join(' ');
 	});
 };