diff --git a/lib/rsa.js b/lib/rsa.js
index ae1b515..daee557 100644
--- a/lib/rsa.js
+++ b/lib/rsa.js
@@ -13,7 +13,7 @@ try {
   /* ignore */
 }
 
-var Keypairs = require('Keypairs');
+var Keypairs = require('keypairs');
 var RSACSR = require('./rsa-csr');
 var NOBJ = {};
 var DEFAULT_BITLEN = 2048;