diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index ac842da6b..0fead8007 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -865,6 +865,7 @@ void CTxMemPool::PrioritiseTransaction(const uint256& hash, const CAmount& nFeeD
             BOOST_FOREACH(txiter descendantIt, setDescendants) {
                 mapTx.modify(descendantIt, update_ancestor_state(0, nFeeDelta, 0, 0));
             }
+            ++nTransactionsUpdated;
         }
     }
     LogPrintf("PrioritiseTransaction: %s feerate += %s\n", hash.ToString(), FormatMoney(nFeeDelta));
diff --git a/src/txmempool.h b/src/txmempool.h
index 92c4d9f9d..9fb8c40e1 100644
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -411,7 +411,7 @@ class CTxMemPool
 {
 private:
     uint32_t nCheckFrequency; //!< Value n means that n times in 2^32 we check.
-    unsigned int nTransactionsUpdated;
+    unsigned int nTransactionsUpdated; //!< Used by getblocktemplate to trigger CreateNewBlock() invocation
     CBlockPolicyEstimator* minerPolicyEstimator;
 
     uint64_t totalTxSize;      //!< sum of all mempool tx's virtual sizes. Differs from serialized tx size since witness data is discounted. Defined in BIP 141.