diff --git a/src/main.cpp b/src/main.cpp
index f676abb85f8..e1e85b7ad50 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1183,8 +1183,22 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C
 
         // Check against previous transactions
         // This is done last to help prevent CPU exhaustion denial-of-service attacks.
-        if (!CheckInputs(tx, state, view, true, STANDARD_SCRIPT_VERIFY_FLAGS, true, NULL))
+        ValidationCostTracker costTracker(MAX_BLOCK_SIGOPS, MAX_BLOCK_SIGHASH);
+        if (!CheckInputs(tx, state, view, true, STANDARD_SCRIPT_VERIFY_FLAGS, true, &costTracker))
+        {
             return false;
+        }
+        // Reject transactions with very high signature-hash cost:
+        uint64_t sighash_limit = (uint64_t)nSize * MAX_BLOCK_SIGHASH / MAX_BLOCK_SIZE;
+        if (costTracker.GetSighashBytes() > sighash_limit)
+        {
+            return state.DoS(0,
+                             error("AcceptToMemoryPool: too much signature hashing %s: %d > %d",
+                                   hash.ToString(), costTracker.GetSighashBytes(), sighash_limit),
+                             REJECT_NONSTANDARD, "bat-txns-too-many-sighash");
+        }
+        LogPrint("txcost", "txcost %s size: %d sigops: %d sighash: %d\n",
+                 hash.ToString(), nSize, costTracker.GetSigOps(), costTracker.GetSighashBytes());
 
         // Check again against just the consensus-critical mandatory script
         // verification flags, in case of bugs in the standard flags that cause