diff --git a/src/p2pool_api.cpp b/src/p2pool_api.cpp
index f5ea9c0..39fb9e9 100644
--- a/src/p2pool_api.cpp
+++ b/src/p2pool_api.cpp
@@ -101,7 +101,7 @@ void p2pool_api::on_stop()
 	uv_close(reinterpret_cast<uv_handle_t*>(&m_dumpToFileAsync), nullptr);
 }
 
-void p2pool_api::dump_to_file_async_internal(const Category& category, const char* filename, DumpFileCallbackBase&& callback)
+void p2pool_api::dump_to_file_async_internal(Category category, const char* filename, DumpFileCallbackBase&& callback)
 {
 	std::vector<char> buf(16384);
 	log::Stream s(buf.data(), buf.size());
diff --git a/src/p2pool_api.h b/src/p2pool_api.h
index a0721d4..5a44213 100644
--- a/src/p2pool_api.h
+++ b/src/p2pool_api.h
@@ -38,7 +38,7 @@ public:
 	void on_stop();
 
 	template<typename T>
-	void set(const Category& category, const char* filename, T&& callback) { dump_to_file_async_internal(category, filename, DumpFileCallback<T>(std::move(callback))); }
+	void set(Category category, const char* filename, T&& callback) { dump_to_file_async_internal(category, filename, DumpFileCallback<T>(std::move(callback))); }
 
 private:
 	void create_dir(const std::string& path);
@@ -72,7 +72,7 @@ private:
 		T m_callback;
 	};
 
-	void dump_to_file_async_internal(const Category& category, const char* filename, DumpFileCallbackBase&& callback);
+	void dump_to_file_async_internal(Category category, const char* filename, DumpFileCallbackBase&& callback);
 	void dump_to_file();
 	static void on_fs_open(uv_fs_t* req);
 	static void on_fs_write(uv_fs_t* req);
diff --git a/src/pow_hash.cpp b/src/pow_hash.cpp
index e9ba231..90b23cd 100644
--- a/src/pow_hash.cpp
+++ b/src/pow_hash.cpp
@@ -440,7 +440,9 @@ bool RandomX_Hasher_RPC::calculate(const void* data_ptr, size_t size, uint64_t h
 	volatile int result = 0;
 	volatile bool done = false;
 
-	JSONRPCRequest::call(m_pool->params().m_host, m_pool->params().m_rpcPort, buf, m_pool->params().m_rpcLogin,
+	const Params& params = m_pool->params();
+
+	JSONRPCRequest::call(params.m_host, params.m_rpcPort, buf, params.m_rpcLogin,
 		[&result, &h](const char* data, size_t size)
 		{
 			rapidjson::Document doc;