diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp
index 9ad296d6a7..1320899463 100644
--- a/src/rpc/mining.cpp
+++ b/src/rpc/mining.cpp
@@ -1032,7 +1032,7 @@ UniValue combineblocksigs(const JSONRPCRequest& request)
     }
 
     // Finalizes the signatures, has no access to keys
-    ProduceSignature(keystore, signature_creator, block.proof.challenge, sig_data, STANDARD_SCRIPT_VERIFY_FLAGS|SCRIPT_NO_SIGHASH_BYTE);
+    ProduceSignature(keystore, signature_creator, block.proof.challenge, sig_data, SCRIPT_NO_SIGHASH_BYTE);
     block.proof.solution = sig_data.scriptSig;
 
     CDataStream ssBlock(SER_NETWORK, PROTOCOL_VERSION | RPCSerializationFlags());
diff --git a/src/script/sign.cpp b/src/script/sign.cpp
index 1a89d23dd7..4f646f89a2 100644
--- a/src/script/sign.cpp
+++ b/src/script/sign.cpp
@@ -182,7 +182,7 @@ static CScript PushAll(const std::vector<valtype>& values)
     return result;
 }
 
-bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreator& creator, const CScript& fromPubKey, SignatureData& sigdata, unsigned int flags)
+bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreator& creator, const CScript& fromPubKey, SignatureData& sigdata, unsigned int additional_flags)
 {
     if (sigdata.complete) return true;
 
@@ -234,7 +234,7 @@ bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreato
     sigdata.scriptSig = PushAll(result);
 
     // Test solution
-    sigdata.complete = solved && VerifyScript(sigdata.scriptSig, fromPubKey, &sigdata.scriptWitness, flags, creator.Checker());
+    sigdata.complete = solved && VerifyScript(sigdata.scriptSig, fromPubKey, &sigdata.scriptWitness, STANDARD_SCRIPT_VERIFY_FLAGS|additional_flags, creator.Checker());
     return sigdata.complete;
 }
 
diff --git a/src/script/sign.h b/src/script/sign.h
index 9e2c3dbc88..32b6ce3c01 100644
--- a/src/script/sign.h
+++ b/src/script/sign.h
@@ -681,7 +681,7 @@ struct PartiallySignedTransaction
 };
 
 /** Produce a script signature using a generic signature creator. */
-bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreator& creator, const CScript& scriptPubKey, SignatureData& sigdata, unsigned int flags = STANDARD_SCRIPT_VERIFY_FLAGS);
+bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreator& creator, const CScript& scriptPubKey, SignatureData& sigdata, unsigned int additional_flags=0);
 
 /** Produce a script signature for a transaction. */
 bool SignSignature(const SigningProvider &provider, const CScript& fromPubKey, CMutableTransaction& txTo, unsigned int nIn, const CAmount& amount, int nHashType);