diff --git a/src/script/standard.h b/src/script/standard.h
index 0057b7c879..7e01ee4a1c 100644
--- a/src/script/standard.h
+++ b/src/script/standard.h
@@ -1,144 +1,142 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2016 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #ifndef BITCOIN_SCRIPT_STANDARD_H
 #define BITCOIN_SCRIPT_STANDARD_H
 
 #include <amount.h>
 #include <pubkey.h>
 #include <script/script_flags.h>
 #include <uint256.h>
 
 #include <boost/variant.hpp>
 
 #include <cstdint>
 
 static const bool DEFAULT_ACCEPT_DATACARRIER = true;
 
 class CKeyID;
 class CScript;
 
 /** A reference to a CScript: the Hash160 of its serialization (see script.h) */
 class CScriptID : public uint160 {
 public:
     CScriptID() : uint160() {}
     CScriptID(const CScript &in);
     CScriptID(const uint160 &in) : uint160(in) {}
 };
 
 /**
  * Default setting for nMaxDatacarrierBytes. 220 bytes of data, +1 for
  * OP_RETURN, +2 for the pushdata opcodes.
  */
 static const unsigned int MAX_OP_RETURN_RELAY = 223;
 
 /**
  * A data carrying output is an unspendable output containing data. The script
  * type is designated as TX_NULL_DATA.
  */
 extern bool fAcceptDatacarrier;
 
 /**
- * Mandatory script verification flags that all new blocks must comply with for
- * them to be valid (but old blocks may not comply with).
- *
- * Failing one of these tests may trigger a DoS ban - see CheckInputs() for
- * details.
+ * When transactions fail script evaluations under standard flags, this flagset
+ * influences the decision of whether to drop them or to also ban the originator
+ * (see CheckInputs).
  */
 static const uint32_t MANDATORY_SCRIPT_VERIFY_FLAGS =
     SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_STRICTENC |
     SCRIPT_ENABLE_SIGHASH_FORKID | SCRIPT_VERIFY_LOW_S |
     SCRIPT_VERIFY_NULLFAIL | SCRIPT_VERIFY_MINIMALDATA |
     SCRIPT_ENABLE_SCHNORR_MULTISIG;
 
 enum txnouttype {
     TX_NONSTANDARD,
     // 'standard' transaction types:
     TX_PUBKEY,
     TX_PUBKEYHASH,
     TX_SCRIPTHASH,
     TX_MULTISIG,
     // unspendable OP_RETURN script that carries data
     TX_NULL_DATA,
 };
 
 class CNoDestination {
 public:
     friend bool operator==(const CNoDestination &a, const CNoDestination &b) {
         return true;
     }
     friend bool operator<(const CNoDestination &a, const CNoDestination &b) {
         return true;
     }
 };
 
 /**
  * A txout script template with a specific destination. It is either:
  *  * CNoDestination: no destination set
  *  * CKeyID: TX_PUBKEYHASH destination
  *  * CScriptID: TX_SCRIPTHASH destination
  *  A CTxDestination is the internal data type encoded in a bitcoin address
  */
 typedef boost::variant<CNoDestination, CKeyID, CScriptID> CTxDestination;
 
 /** Check whether a CTxDestination is a CNoDestination. */
 bool IsValidDestination(const CTxDestination &dest);
 
 /** Get the name of a txnouttype as a C string, or nullptr if unknown. */
 const char *GetTxnOutputType(txnouttype t);
 
 /**
  * Parse a scriptPubKey and identify script type for standard scripts. If
  * successful, returns script type and parsed pubkeys or hashes, depending on
  * the type. For example, for a P2SH script, vSolutionsRet will contain the
  * script hash, for P2PKH it will contain the key hash, etc.
  *
  * @param[in]   scriptPubKey   Script to parse
  * @param[out]  typeRet        The script type
  * @param[out]  vSolutionsRet  Vector of parsed pubkeys and hashes
  * @return                     True if script matches standard template
  */
 bool Solver(const CScript &scriptPubKey, txnouttype &typeRet,
             std::vector<std::vector<uint8_t>> &vSolutionsRet);
 
 /**
  * Parse a standard scriptPubKey for the destination address. Assigns result to
  * the addressRet parameter and returns true if successful. For multisig
  * scripts, instead use ExtractDestinations. Currently only works for P2PK,
  * P2PKH, and P2SH scripts.
  */
 bool ExtractDestination(const CScript &scriptPubKey,
                         CTxDestination &addressRet);
 
 /**
  * Parse a standard scriptPubKey with one or more destination addresses. For
  * multisig scripts, this populates the addressRet vector with the pubkey IDs
  * and nRequiredRet with the n required to spend. For other destinations,
  * addressRet is populated with a single value and nRequiredRet is set to 1.
  * Returns true if successful. Currently does not extract address from
  * pay-to-witness scripts.
  *
  * Note: this function confuses destinations (a subset of CScripts that are
  * encodable as an address) with key identifiers (of keys involved in a
  * CScript), and its use should be phased out.
  */
 bool ExtractDestinations(const CScript &scriptPubKey, txnouttype &typeRet,
                          std::vector<CTxDestination> &addressRet,
                          int &nRequiredRet);
 
 /**
  * Generate a Bitcoin scriptPubKey for the given CTxDestination. Returns a P2PKH
  * script for a CKeyID destination, a P2SH script for a CScriptID, and an empty
  * script for CNoDestination.
  */
 CScript GetScriptForDestination(const CTxDestination &dest);
 
 /** Generate a P2PK script for the given pubkey. */
 CScript GetScriptForRawPubKey(const CPubKey &pubkey);
 
 /** Generate a multisig script. */
 CScript GetScriptForMultisig(int nRequired, const std::vector<CPubKey> &keys);
 
 #endif // BITCOIN_SCRIPT_STANDARD_H