diff --git a/src/primitives/block.h b/src/primitives/block.h
index d19981def..ac73c8292 100644
--- a/src/primitives/block.h
+++ b/src/primitives/block.h
@@ -28,6 +28,15 @@
 #include "uint256.h"
 #include "arith_uint256.h"
 
+class CPOSNonce : public uint256
+{
+public:
+    CPOSNonce() : uint256() { }
+    CPOSNonce(const base_blob<256> &b) : uint256(b) { }
+    CPOSNonce(const std::vector<unsigned char> &vch) : uint256(vch) { }
+};
+
+
 /** Nodes collect new transactions into a block, hash them into a hash tree,
  * and scan through nonce values to make the block's hash satisfy proof-of-work
  * requirements.  When they solve the proof-of-work, they broadcast the block
@@ -50,8 +59,8 @@ public:
     uint256 hashFinalSaplingRoot;
     uint32_t nTime;
     uint32_t nBits;
-    //CPOSNonce nNonce;
-	uint256 nNonce;
+    CPOSNonce nNonce;
+	//uint256 nNonce;
 
     std::vector<unsigned char> nSolution;