diff --git a/firmware/backlight.c b/firmware/backlight.c
index 0ab4574..5b04a7b 100644
--- a/firmware/backlight.c
+++ b/firmware/backlight.c
@@ -30,6 +30,7 @@
 #include "button.h"
 #include "timer.h"
 #include "backlight.h"
+#include "logf.h"
 
 #if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
 #include "lcd.h" /* for lcd_enable() and lcd_sleep() */
@@ -63,10 +64,12 @@ static inline void _backlight_set_brightness(int val)
 
 static inline void _buttonlight_on(void)
 {
+    sim_buttonlight(100);
 }
 
 static inline void _buttonlight_off(void)
 {
+    sim_buttonlight(0);
 }
 
 static inline void _buttonlight_set_brightness(int val)
@@ -145,12 +148,14 @@ static void buttonlight_update_state(void)
 /* external interface */
 void buttonlight_on(void)
 {
+    logf("buttonlight_on()\n");
     queue_remove_from_head(&backlight_queue, BUTTON_LIGHT_ON);
     queue_post(&backlight_queue, BUTTON_LIGHT_ON, 0);
 }
 
 void buttonlight_off(void)
 {
+    logf("buttonlight_off()\n");
     queue_post(&backlight_queue, BUTTON_LIGHT_OFF, 0);
 }
 
@@ -607,12 +612,14 @@ void backlight_init(void)
 
 void backlight_on(void)
 {
+    logf("backlight_on()\n");
     queue_remove_from_head(&backlight_queue, BACKLIGHT_ON);
     queue_post(&backlight_queue, BACKLIGHT_ON, 0);
 }
 
 void backlight_off(void)
 {
+    logf("backlight_off()\n");
     queue_post(&backlight_queue, BACKLIGHT_OFF, 0);
 }
 
@@ -689,11 +696,13 @@ void lcd_set_sleep_after_backlight_off(int index)
 #ifdef HAVE_REMOTE_LCD
 void remote_backlight_on(void)
 {
+    logf("remote_backlight_on()");
     queue_post(&backlight_queue, REMOTE_BACKLIGHT_ON, 0);
 }
 
 void remote_backlight_off(void)
 {
+    logf("remote_backlight_off()");
     queue_post(&backlight_queue, REMOTE_BACKLIGHT_OFF, 0);
 }
 
diff --git a/firmware/export/backlight.h b/firmware/export/backlight.h
index d6b554d..74722d5 100644
--- a/firmware/export/backlight.h
+++ b/firmware/export/backlight.h
@@ -67,6 +67,7 @@ void remote_backlight_set_on_button_hold(int index);
 
 #ifdef SIMULATOR
 void sim_backlight(int value);
+void sim_buttonlight(int value);
 void sim_remote_backlight(int value);
 #endif
 
diff --git a/uisimulator/sdl/lcd-bitmap.c b/uisimulator/sdl/lcd-bitmap.c
index 0469699..1aabfec 100644
--- a/uisimulator/sdl/lcd-bitmap.c
+++ b/uisimulator/sdl/lcd-bitmap.c
@@ -103,6 +103,11 @@ void sim_backlight(int value)
 
 #endif
 }
+
+void sim_buttonlight(int value)
+{
+    fprintf(stderr, "sim_buttonlight(%i)\n", value);
+}
 #endif
 
 /* initialise simulator lcd driver */
diff --git a/uisimulator/sdl/lcd-remote-bitmap.c b/uisimulator/sdl/lcd-remote-bitmap.c
index ce6be13..7cd995a 100644
--- a/uisimulator/sdl/lcd-remote-bitmap.c
+++ b/uisimulator/sdl/lcd-remote-bitmap.c
@@ -54,6 +54,7 @@ void lcd_remote_update_rect(int x_start, int y_start, int width, int height)
 
 void sim_remote_backlight(int value)
 {
+    fprintf(stderr, "sim_remote_backlight(%i)\n", value);
     if (value > 0) {
         sdl_set_gradient(remote_surface, &remote_backlight_color_zero,
                          &remote_color_max, 0, (1<<LCD_REMOTE_DEPTH));