diff --git a/src/httpserver.cpp b/src/httpserver.cpp
index 3a3a26b7d..9daf3d196 100644
--- a/src/httpserver.cpp
+++ b/src/httpserver.cpp
@@ -279,7 +279,7 @@ static void http_reject_request_cb(struct evhttp_request* req, void*)
 }
 
 /** Event dispatcher thread */
-static bool ThreadHTTP(struct event_base* base, struct evhttp* http)
+static bool ThreadHTTP(struct event_base* base)
 {
     RenameThread("bitcoin-http");
     LogPrint(BCLog::HTTP, "Entering http event loop\n");
@@ -428,9 +428,9 @@ void StartHTTPServer()
     LogPrint(BCLog::HTTP, "Starting HTTP server\n");
     int rpcThreads = std::max((long)gArgs.GetArg("-rpcthreads", DEFAULT_HTTP_THREADS), 1L);
     LogPrintf("HTTP: starting %d worker threads\n", rpcThreads);
-    std::packaged_task<bool(event_base*, evhttp*)> task(ThreadHTTP);
+    std::packaged_task<bool(event_base*)> task(ThreadHTTP);
     threadResult = task.get_future();
-    threadHTTP = std::thread(std::move(task), eventBase, eventHTTP);
+    threadHTTP = std::thread(std::move(task), eventBase);
 
     for (int i = 0; i < rpcThreads; i++) {
         g_thread_http_workers.emplace_back(HTTPWorkQueueRun, workQueue);
diff --git a/src/miner.cpp b/src/miner.cpp
index 738ccad1b..c32dc26f8 100644
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -64,7 +64,7 @@ BlockAssembler::BlockAssembler(const CChainParams& params, const Options& option
     nBlockMaxWeight = std::max<size_t>(4000, std::min<size_t>(MAX_BLOCK_WEIGHT - 4000, options.nBlockMaxWeight));
 }
 
-static BlockAssembler::Options DefaultOptions(const CChainParams& params)
+static BlockAssembler::Options DefaultOptions()
 {
     // Block resource limits
     // If -blockmaxweight is not given, limit to DEFAULT_BLOCK_MAX_WEIGHT
@@ -80,7 +80,7 @@ static BlockAssembler::Options DefaultOptions(const CChainParams& params)
     return options;
 }
 
-BlockAssembler::BlockAssembler(const CChainParams& params) : BlockAssembler(params, DefaultOptions(params)) {}
+BlockAssembler::BlockAssembler(const CChainParams& params) : BlockAssembler(params, DefaultOptions()) {}
 
 void BlockAssembler::resetBlock()
 {
diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp
index 1936d44cd..be2138d50 100644
--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@@ -1588,7 +1588,7 @@ bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const C
     return set_success(serror);
 }
 
-size_t static WitnessSigOps(int witversion, const std::vector<unsigned char>& witprogram, const CScriptWitness& witness, int flags)
+size_t static WitnessSigOps(int witversion, const std::vector<unsigned char>& witprogram, const CScriptWitness& witness)
 {
     if (witversion == 0) {
         if (witprogram.size() == WITNESS_V0_KEYHASH_SIZE)
@@ -1616,7 +1616,7 @@ size_t CountWitnessSigOps(const CScript& scriptSig, const CScript& scriptPubKey,
     int witnessversion;
     std::vector<unsigned char> witnessprogram;
     if (scriptPubKey.IsWitnessProgram(witnessversion, witnessprogram)) {
-        return WitnessSigOps(witnessversion, witnessprogram, witness ? *witness : witnessEmpty, flags);
+        return WitnessSigOps(witnessversion, witnessprogram, witness ? *witness : witnessEmpty);
     }
 
     if (scriptPubKey.IsPayToScriptHash() && scriptSig.IsPushOnly()) {
@@ -1628,7 +1628,7 @@ size_t CountWitnessSigOps(const CScript& scriptSig, const CScript& scriptPubKey,
         }
         CScript subscript(data.begin(), data.end());
         if (subscript.IsWitnessProgram(witnessversion, witnessprogram)) {
-            return WitnessSigOps(witnessversion, witnessprogram, witness ? *witness : witnessEmpty, flags);
+            return WitnessSigOps(witnessversion, witnessprogram, witness ? *witness : witnessEmpty);
         }
     }