   setup_buttons();
   sturtup_blink();
 
-  #ifdef DEBUG_SWITCHER
+  #if DEBUG_SWITCHER
     Serial.println("Connecting to network ...");
   #endif
 
   if (client.begin( const_cast<byte*>(mac) ) == 0 ) {
-    #ifdef DEBUG_SWITCHER
+    #if DEBUG_SWITCHER
       Serial.println("Failed to configure Ethernet using DHCP");
     #endif
   } else
   {
-    #ifdef DEBUG_SWITCHER
+    #if DEBUG_SWITCHER
       Serial.println("OK!");
       Serial.println(Ethernet.localIP());
     #endif


  status_code = client.get( lights_url_by_button_number(b_number) );

  #ifdef DEBUG_SWITCHER
    Serial.print("GET query:");
    Serial.println(lights_url_by_button_number(b_number));
    Serial.print("Status code from server: ");

    if ( millis() - last_pressed_at > minimal_delay )
    {
      if(!button_was_pressed[i] && digitalRead(buttons[i]) == LOW) {
        #if DEBUG_SWITCHER
          Serial.println("Button pressed!");
        #endif
        control_led(HIGH);
