diff --git a/Makefile b/Makefile
index 91cd220..2a79dab 100644
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,7 @@ $(NAME): ofiles
 	ar rcs $(NAME) $(OFILES)
 
 ofiles:
-	g++ -std=c++20 -O -c $(CFILES)
+	g++ $(CFLAGS) -std=c++20 -O -c $(CFILES)
 
 clean:
 	rm -f $(OFILES)
diff --git a/response.cpp b/response.cpp
index 12342d7..42faeb4 100644
--- a/response.cpp
+++ b/response.cpp
@@ -42,7 +42,7 @@ void Response::Send(int clientSocket) {
   for (const auto &[key, value] : m_headers) {
     ss << key << ": " << value << "\n";
   }
-  if (m_payload.size() >= 0) {
+  if (m_payload.size() > 0) {
     ss << "\n";
     for (auto &byte : m_payload) {
       char c = static_cast<char>(byte);
diff --git a/router.cpp b/router.cpp
index 1b6b271..586bcde 100644
--- a/router.cpp
+++ b/router.cpp
@@ -1,6 +1,7 @@
 #include "router.hpp"
 #include "http.hpp"
 #include <csignal>
+#include <cstdint>
 #include <mutex>
 #include <strings.h>
 
@@ -42,7 +43,7 @@ void Router::QueueClient(int fd) {
 
 void Router::StartThreadLoop() {
   const uint32_t numThreads = std::thread::hardware_concurrency();
-  for (auto i = 0; i < numThreads; ++i) {
+  for (uint32_t i = 0; i < numThreads; ++i) {
     m_threads.emplace_back(std::thread(&Router::ThreadLoop, this));
   }
 }
@@ -73,7 +74,7 @@ void Router::ThreadLoop() {
       m_clients.pop();
     }
 
-    int read = recv(client, buffer.data(), buffer.size(), 0);
+    recv(client, buffer.data(), buffer.size(), 0);
     Request req(buffer);
     Response res = Route(req);
     res.Send(client);