diff --git a/src/server/poolserver/NetworkMgr/NetworkMgr.cpp b/src/server/poolserver/NetworkMgr/NetworkMgr.cpp
index 403e286..8000a63 100644
--- a/src/server/poolserver/NetworkMgr/NetworkMgr.cpp
+++ b/src/server/poolserver/NetworkMgr/NetworkMgr.cpp
@@ -72,6 +72,8 @@ void NetworkMgr::UpdateBlockTemplate()
                 block->tx.push_back(tx);
             }
             
+            block->signature = BinaryData(72, 0);
+            
             // Genrate merkle tree
             block->BuildMerkleTree();
             
diff --git a/src/server/shared/Bitcoin/Bitcoin.h b/src/server/shared/Bitcoin/Bitcoin.h
index 25f206e..cb78de9 100644
--- a/src/server/shared/Bitcoin/Bitcoin.h
+++ b/src/server/shared/Bitcoin/Bitcoin.h
@@ -48,9 +48,14 @@ namespace Bitcoin
         txin.script = scriptsig.Binary();
         txin.n = 0;
         
+        ByteBuffer temp;
+        temp.Append<uint8>(pubkey.size());
+        temp << pubkey;
+        temp.Append<uint8>(Bitcoin::OP_CHECKSIG);
+        
         TxOut txout;
         txout.value = value;
-        txout.scriptPubKey = Bitcoin::Script(pubkey) + Bitcoin::OP_CHECKSIG;
+        txout.scriptPubKey = Bitcoin::Script(temp.Binary());
         
         Transaction tx;
         tx.version = 1;