1 files changed, 2 insertions, 2 deletions
diff --git a/src/txmempool.h b/src/txmempool.h
index d272114a7c..6723ea8e6c 100644
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -45,7 +45,7 @@ struct LockPoints
     // values are still valid even after a reorg.
     CBlockIndex* maxInputBlock;
 
-    LockPoints() : height(0), time(0), maxInputBlock(NULL) { }
+    LockPoints() : height(0), time(0), maxInputBlock(nullptr) { }
 };
 
 class CTxMemPool;
@@ -592,7 +592,7 @@ public:
       *  pvNoSpendsRemaining, if set, will be populated with the list of outpoints
       *  which are not in mempool which no longer have any spends in this mempool.
       */
-    void TrimToSize(size_t sizelimit, std::vector<COutPoint>* pvNoSpendsRemaining=NULL);
+    void TrimToSize(size_t sizelimit, std::vector<COutPoint>* pvNoSpendsRemaining=nullptr);
 
     /** Expire all transaction (and their dependencies) in the mempool older than time. Return the number of removed transactions. */
     int Expire(int64_t time);