diff --git a/lib/pool.js b/lib/pool.js
index c464d1301..e520ff6a0 100644
--- a/lib/pool.js
+++ b/lib/pool.js
@@ -112,6 +112,8 @@ function BlockTemplate(template){
     this.reserveOffset = template.reserved_offset;
     this.buffer = new Buffer(this.blob, 'hex');
     instanceId.copy(this.buffer, this.reserveOffset + 4, 0, 3);
+    this.previous_hash = new Buffer(32);
+    this.buffer.copy(this.previous_hash,0,7,39);
     this.extraNonce = 0;
 }
 BlockTemplate.prototype = {
@@ -141,7 +143,10 @@ function jobRefresh(loop, callback){
             callback(false);
             return;
         }
-        if (!currentBlockTemplate || result.height > currentBlockTemplate.height){
+        var buffer = new Buffer(result.blocktemplate_blob, 'hex');
+        var previous_hash = new Buffer(32);
+        buffer.copy(previous_hash,0,7,39);
+        if (!currentBlockTemplate || ( previous_hash.toString('hex') != currentBlockTemplate.previous_hash.toString('hex') && result.height >= currentBlockTemplate.height )) 
             log('info', logSystem, 'New block to mine at height %d w/ difficulty of %d', [result.height, result.difficulty]);
             processBlockTemplate(result);
         }