diff --git a/esp32/include/communication/native_server.h b/esp32/include/communication/native_server.h
index 4b61f5e..4f55122 100644
--- a/esp32/include/communication/native_server.h
+++ b/esp32/include/communication/native_server.h
@@ -26,7 +26,7 @@ class NativeServer {
     NativeServer();
     ~NativeServer();
 
-    void config(size_t maxUriHandlers, size_t stackSize, size_t maxUploadSize);
+    void config(size_t maxUriHandlers, size_t stackSize);
     esp_err_t listen(uint16_t port);
     void stop();
 
@@ -42,7 +42,7 @@ class NativeServer {
     esp_err_t wsSendAll(const uint8_t* data, size_t len);
     void addWsClient(int sockfd);
     void removeWsClient(int sockfd);
-    std::vector<int>& getWsClients();
+    std::vector<int> getWsClients();
 
     void addDefaultHeader(const char* key, const char* value);
 
diff --git a/esp32/src/communication/native_server.cpp b/esp32/src/communication/native_server.cpp
index 14806d5..32700ce 100644
--- a/esp32/src/communication/native_server.cpp
+++ b/esp32/src/communication/native_server.cpp
@@ -17,7 +17,7 @@ NativeServer::~NativeServer() {
     vSemaphoreDelete(wsMutex_);
 }
 
-void NativeServer::config(size_t maxUriHandlers, size_t stackSize, size_t maxUploadSize) {
+void NativeServer::config(size_t maxUriHandlers, size_t stackSize) {
     config_.max_uri_handlers = maxUriHandlers;
     config_.stack_size = stackSize;
     config_.max_resp_headers = 16;
@@ -252,7 +252,12 @@ void NativeServer::removeWsClient(int sockfd) {
     xSemaphoreGive(wsMutex_);
 }
 
-std::vector<int>& NativeServer::getWsClients() { return wsClients_; }
+std::vector<int> NativeServer::getWsClients() {
+    xSemaphoreTake(wsMutex_, portMAX_DELAY);
+    std::vector<int> clients = wsClients_;
+    xSemaphoreGive(wsMutex_);
+    return clients;
+}
 
 esp_err_t NativeServer::wsSend(int sockfd, const uint8_t* data, size_t len) {
     httpd_ws_frame_t frame = {.final = true,
diff --git a/esp32/src/main.cpp b/esp32/src/main.cpp
index b8f6f71..5712715 100644
--- a/esp32/src/main.cpp
+++ b/esp32/src/main.cpp
@@ -40,7 +40,7 @@ WiFiService wifiService;
 APService apService;
 
 void setupServer() {
-    nativeServer.config(50 + WWW_ASSETS_COUNT, 32768, 1000000);
+    nativeServer.config(50 + WWW_ASSETS_COUNT, 32768);
     nativeServer.listen(80);
 
     nativeServer.on("/api/system/reset", HTTP_POST,