diff --git a/src/coins.cpp b/src/coins.cpp
index f02949de53..96b336ce77 100644
--- a/src/coins.cpp
+++ b/src/coins.cpp
@@ -117,6 +117,15 @@ CCoinsModifier CCoinsViewCache::ModifyCoins(const uint256 &txid) {
     return CCoinsModifier(*this, ret.first, cachedCoinUsage);
 }
 
+CCoinsModifier CCoinsViewCache::ModifyNewCoins(const uint256 &txid) {
+    assert(!hasModifier);
+    std::pair<CCoinsMap::iterator, bool> ret = cacheCoins.insert(std::make_pair(txid, CCoinsCacheEntry()));
+    ret.first->second.coins.Clear();
+    ret.first->second.flags = CCoinsCacheEntry::FRESH;
+    ret.first->second.flags |= CCoinsCacheEntry::DIRTY;
+    return CCoinsModifier(*this, ret.first, 0);
+}
+
 const CCoins* CCoinsViewCache::AccessCoins(const uint256 &txid) const {
     CCoinsMap::const_iterator it = FetchCoins(txid);
     if (it == cacheCoins.end()) {
diff --git a/src/coins.h b/src/coins.h
index bf4a777b8a..3b45cb0a34 100644
--- a/src/coins.h
+++ b/src/coins.h
@@ -419,6 +419,17 @@ public:
      */
     CCoinsModifier ModifyCoins(const uint256 &txid);
 
+    /**
+     * Return a modifiable reference to a CCoins. Assumes that no entry with the given
+     * txid exists and creates a new one. This saves a database access in the case where
+     * the coins were to be wiped out by FromTx anyway.  This should not be called with
+     * the 2 historical coinbase duplicate pairs because the new coins are marked fresh, and
+     * in the event the duplicate coinbase was spent before a flush, the now pruned coins
+     * would not properly overwrite the first coinbase of the pair. Simultaneous modifications
+     * are not allowed.
+     */
+    CCoinsModifier ModifyNewCoins(const uint256 &txid);
+
     /**
      * Push the modifications applied to this cache to its base.
      * Failure to call this method before destruction will cause the changes to be forgotten.
diff --git a/src/main.cpp b/src/main.cpp
index 26a22ae6fd..270b4c063a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1285,10 +1285,17 @@ void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCach
                 undo.nVersion = coins->nVersion;
             }
         }
+        // add outputs
+        inputs.ModifyNewCoins(tx.GetHash())->FromTx(tx, nHeight);
+    }
+    else {
+        // add outputs for coinbase tx
+        // In this case call the full ModifyCoins which will do a database
+        // lookup to be sure the coins do not already exist otherwise we do not
+        // know whether to mark them fresh or not.  We want the duplicate coinbases
+        // before BIP30 to still be properly overwritten.
+        inputs.ModifyCoins(tx.GetHash())->FromTx(tx, nHeight);
     }
-
-    // add outputs
-    inputs.ModifyCoins(tx.GetHash())->FromTx(tx, nHeight);
 }
 
 void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCache &inputs, int nHeight)