diff --git a/build b/build
index 7c09198..c24b6ae 100644
--- a/build
+++ b/build
@@ -1 +1 @@
-37
\ No newline at end of file
+38
\ No newline at end of file
diff --git a/src/framework/ConfigurationValidator.cpp b/src/framework/ConfigurationValidator.cpp
index 2154f0f..c77841b 100644
--- a/src/framework/ConfigurationValidator.cpp
+++ b/src/framework/ConfigurationValidator.cpp
@@ -2749,7 +2749,7 @@ static json DefaultUCentralSchema = R"(
             if(std::regex_match(value,host_regex))
                 return;
             throw std::invalid_argument(value + " is not a proper FQDN.");
-        } else if(format == "fqdn") {
+        } else if(format == "fqdn" || format=="uc-fqdn") {
             if(std::regex_match(value,host_regex))
                 return;
             throw std::invalid_argument(value + " is not a proper FQDN.");
diff --git a/src/framework/UI_WebSocketClientServer.cpp b/src/framework/UI_WebSocketClientServer.cpp
index 35032bc..912687a 100644
--- a/src/framework/UI_WebSocketClientServer.cpp
+++ b/src/framework/UI_WebSocketClientServer.cpp
@@ -119,7 +119,7 @@ namespace OpenWifi {
 	}
 
 	bool UI_WebSocketClientServer::SendToUser(const std::string &UserName, std::uint64_t id, const std::string &Payload) {
-		std::lock_guard G(Mutex_);
+		std::lock_guard G(LocalMutex_);
 
 		for(const auto &Client:Clients_) {
 			if(Client.second->UserName_ == UserName) {
@@ -139,7 +139,7 @@ namespace OpenWifi {
 	}
 
 	void UI_WebSocketClientServer::SendToAll(std::uint64_t id, const std::string &Payload) {
-		std::lock_guard G(Mutex_);
+		std::lock_guard G(LocalMutex_);
 
 		for(const auto &Client:Clients_) {
 			try {
@@ -189,7 +189,6 @@ namespace OpenWifi {
 	void UI_WebSocketClientServer::OnSocketReadable([[maybe_unused]] const Poco::AutoPtr<Poco::Net::ReadableNotification> &pNf) {
 
         UI_WebSocketClientServer::ClientList::iterator Client;
-
         std::lock_guard     G(LocalMutex_);
 
 		try {
@@ -295,6 +294,7 @@ namespace OpenWifi {
 
 	void UI_WebSocketClientServer::OnSocketShutdown([[maybe_unused]] const Poco::AutoPtr<Poco::Net::ShutdownNotification> &pNf) {
         try {
+			std::lock_guard     G(LocalMutex_);
 			auto Client = Clients_.find(pNf->socket().impl()->sockfd());
             if (Client == end(Clients_))
                 return;