diff --git a/js/src/abi/util/address.js b/js/src/abi/util/address.js
index a961e70356a..d53d270bcac 100644
--- a/js/src/abi/util/address.js
+++ b/js/src/abi/util/address.js
@@ -18,12 +18,13 @@ import { keccak_256 } from 'js-sha3'; // eslint-disable-line camelcase
 
 export function isChecksumValid (_address) {
   const address = _address.replace('0x', '');
-  const hash = keccak_256(address.toLowerCase(address));
+  const hash = keccak_256(address.toLowerCase());
 
   for (let n = 0; n < 40; n++) {
+    const char = address[n];
+    const isLower = char !== char.toUpperCase();
+    const isUpper = char !== char.toLowerCase();
     const hashval = parseInt(hash[n], 16);
-    const isLower = address[n].toUpperCase() !== address[n];
-    const isUpper = address[n].toLowerCase() !== address[n];
 
     if ((hashval > 7 && isLower) || (hashval <= 7 && isUpper)) {
       return false;
diff --git a/js/src/views/Dapps/builtin.json b/js/src/views/Dapps/builtin.json
index 477678156a7..5572af81919 100644
--- a/js/src/views/Dapps/builtin.json
+++ b/js/src/views/Dapps/builtin.json
@@ -49,7 +49,7 @@
     "id": "0xae74ad174b95cdbd01c88ac5b73a296d33e9088fc2a200e76bcedf3a94a7815d",
     "url": "localtx",
     "name": "TxQueue Viewer",
-    "description": "Have a peak on internals of transaction queue of your node.",
+    "description": "Have a peek at the internals of your node's transaction queue.",
     "author": "Parity Team <admin@ethcore.io>",
     "version": "1.0.0",
     "visible": true,