diff --git a/lib/http/rpc.js b/lib/http/rpc.js
index da9829c7..c903079f 100644
--- a/lib/http/rpc.js
+++ b/lib/http/rpc.js
@@ -2169,9 +2169,9 @@ RPC.prototype.updateWork = co(function* updateWork() {
   this.bindChain();
 
   if (attempt) {
-    if (++this.nonce1 === 0xffffffff) {
-      this.nonce1 = 0;
-      this.nonce2++;
+    if (++this.nonce2 === 0x100000000) {
+      this.nonce2 = 0;
+      this.nonce1++;
     }
     root = attempt.getRoot(this.nonce1, this.nonce2);
     root = root.toString('hex');