diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index 91040fb9b..72547b582 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -945,6 +945,7 @@ void CTxMemPool::PrioritiseTransaction(const uint256 hash, const std::string str
             BOOST_FOREACH(txiter descendantIt, setDescendants) {
                 mapTx.modify(descendantIt, update_ancestor_state(0, nFeeDelta, 0, 0));
             }
+            ++nTransactionsUpdated;
         }
     }
     LogPrintf("PrioritiseTransaction: %s priority += %f, fee += %d\n", strHash, dPriorityDelta, FormatMoney(nFeeDelta));
diff --git a/src/txmempool.h b/src/txmempool.h
index db1a02455..12c9e59f5 100644
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -432,7 +432,7 @@ 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.