diff --git a/wallet/signing-key.js b/wallet/signing-key.js
index fce420082..39c7b10cf 100644
--- a/wallet/signing-key.js
+++ b/wallet/signing-key.js
@@ -55,8 +55,8 @@ function SigningKey(privateKey) {
 
     utils.defineProperty(this, 'signDigest', function(digest) {
         var signature = keyPair.sign(utils.arrayify(digest), {canonical: true});
-        const r = '0x' + signature.r.toString(16);
-        const s = '0x' + signature.s.toString(16);
+        var r = '0x' + signature.r.toString(16);
+        var s = '0x' + signature.s.toString(16);
 
         return {
             recoveryParam: signature.recoveryParam,
diff --git a/wallet/wallet.js b/wallet/wallet.js
index babb1c3f4..53f1c710e 100644
--- a/wallet/wallet.js
+++ b/wallet/wallet.js
@@ -133,8 +133,8 @@ function Wallet(privateKey, provider) {
         }
 
         raw.push(utils.hexlify(v));
-        raw.push(signature.r);
-        raw.push(signature.s);
+        raw.push(utils.stripZeros(utils.arrayify(signature.r)));
+        raw.push(utils.stripZeros(utils.arrayify(signature.s)));
 
         return utils.RLP.encode(raw);
     });