diff --git a/packages/ripple-keypairs/src/index.js b/packages/ripple-keypairs/src/index.js
index c6cd9695..1ab2a295 100644
--- a/packages/ripple-keypairs/src/index.js
+++ b/packages/ripple-keypairs/src/index.js
@@ -78,7 +78,7 @@ function deriveKeypair(seed, options) {
   const messageToVerify = hash('This test message should verify.')
   const signature = method.sign(messageToVerify, keypair.privateKey)
   if (method.verify(messageToVerify, signature, keypair.publicKey) !== true) {
-    throw new Error('derived keypair did not generate verifiable signature');
+    throw new Error('derived keypair did not generate verifiable signature')
   }
   return keypair
 }