diff --git a/src/validation.cpp b/src/validation.cpp
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -2367,14 +2367,10 @@
 private:
     std::vector<PerBlockConnectTrace> blocksConnected;
     CTxMemPool &pool;
-    boost::signals2::scoped_connection m_connNotifyEntryRemoved;
 
 public:
-    explicit ConnectTrace(CTxMemPool &_pool) : blocksConnected(1), pool(_pool) {
-        m_connNotifyEntryRemoved = pool.NotifyEntryRemoved.connect(
-            std::bind(&ConnectTrace::NotifyEntryRemoved, this,
-                      std::placeholders::_1, std::placeholders::_2));
-    }
+    explicit ConnectTrace(CTxMemPool &_pool)
+        : blocksConnected(1), pool(_pool) {}
 
     void BlockConnected(CBlockIndex *pindex,
                         std::shared_ptr<const CBlock> pblock) {
@@ -2396,11 +2392,6 @@
         blocksConnected.pop_back();
         return blocksConnected;
     }
-
-    void NotifyEntryRemoved(CTransactionRef txRemoved,
-                            MemPoolRemovalReason reason) {
-        assert(!blocksConnected.back().pindex);
-    }
 };
 
 bool CChainState::MarkBlockAsFinal(BlockValidationState &state,