diff --git a/src/Network/Login.cpp b/src/Network/Login.cpp
index 99141ed..166ccd3 100644
--- a/src/Network/Login.cpp
+++ b/src/Network/Login.cpp
@@ -9,7 +9,7 @@
 #include "Logger.h"
 
 void UpdateKey(const std::string& newKey) {
-   if (!newKey.empty()) {
+   if (!newKey.empty() && std::isalnum(newKey[0])) {
       std::ofstream Key("key");
       if (Key.is_open()) {
          Key << newKey;
diff --git a/src/gui/Gui.cpp b/src/gui/Gui.cpp
index f22b15d..bdcaa7e 100644
--- a/src/gui/Gui.cpp
+++ b/src/gui/Gui.cpp
@@ -379,7 +379,9 @@ void CheckKey() {
 
          Json d = Json::parse(Buffer, nullptr, false);
          if (Buffer == "-1" || Buffer.at(0) != '{' || d.is_discarded()) {
+            LOG(ERROR) << Buffer;
             wxMessageBox("Couldn't connect to auth server, you might be offline!", "Warning", wxICON_WARNING);
+            UpdateKey("");
             return;
          }
          if (d["success"].get<bool>()) {