diff --git a/easy_profiler_core/easy_socket.cpp b/easy_profiler_core/easy_socket.cpp
index bfb1e5c..350a51b 100644
--- a/easy_profiler_core/easy_socket.cpp
+++ b/easy_profiler_core/easy_socket.cpp
@@ -123,8 +123,10 @@ void EasySocket::flush()
     if (m_socket)
         closeSocket(m_socket);
 
-    if (m_replySocket != m_socket)
+    if (m_replySocket != m_socket && m_replySocket != 0) {
+        // we do not need to close uninitialized reply socket
         closeSocket(m_replySocket);
+    }
 
 #if defined(_WIN32)
     m_socket = 0;
@@ -157,6 +159,9 @@ void EasySocket::checkResult(int result)
 #if !defined(_WIN32)
             case SOCK_BROKEN_PIPE:
             case SOCK_ENOENT:
+#endif
+#if defined (__APPLE__)
+            case ECONNREFUSED:
 #endif
                 m_state = ConnectionState::Disconnected;
                 break;
diff --git a/profiler_gui/main_window.cpp b/profiler_gui/main_window.cpp
index b9ea501..498a983 100644
--- a/profiler_gui/main_window.cpp
+++ b/profiler_gui/main_window.cpp
@@ -2536,11 +2536,9 @@ void MainWindow::onConnectClicked(bool)
     if (!m_listener.connect(address.toStdString().c_str(), port, reply))
     {
         Dialog::warning(this, "Warning", QString("Cannot connect to %1").arg(address), QMessageBox::Close);
-        if (EASY_GLOBALS.connected)
-        {
-            m_listener.closeSocket();
-            setDisconnected(false);
-        }
+        // we need to close socket everytime on failed connection
+        m_listener.closeSocket();
+        setDisconnected(false);
 
         if (!isSameAddress)
         {