1 files changed, 5 insertions, 4 deletions
diff --git a/src/main.cpp b/src/main.cpp
index f483312065..480d2d8bbf 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2797,12 +2797,13 @@ CBlock* CreateNewBlock(CReserveKey& reservekey)
 void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce, int64& nPrevTime)
 {
     // Update nExtraNonce
-    int64 nNow = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
-    if (++nExtraNonce >= 0x7f && nNow > nPrevTime+1)
+    static uint256 hashPrevBlock;
+    if (hashPrevBlock != pblock->hashPrevBlock)
     {
-        nExtraNonce = 1;
-        nPrevTime = nNow;
+        nExtraNonce = 0;
+        hashPrevBlock = pblock->hashPrevBlock;
     }
+    ++nExtraNonce;
     pblock->vtx[0].vin[0].scriptSig = CScript() << pblock->nBits << CBigNum(nExtraNonce);
     pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 }