diff --git a/firmware/export/config/samsungyh820.h b/firmware/export/config/samsungyh820.h
index 5e4c79d3ab..516b010e96 100644
--- a/firmware/export/config/samsungyh820.h
+++ b/firmware/export/config/samsungyh820.h
@@ -64,7 +64,7 @@
 /* #define HAVE_LCD_FLIP */
 
 /* define this if you can invert the colours on your LCD */
-/* todo #define HAVE_LCD_INVERT */
+#define HAVE_LCD_INVERT
 
 /* put the lcd frame buffer in IRAM */
 /* #define IRAM_LCDFRAMEBUFFER IDATA_ATTR */
diff --git a/firmware/target/arm/samsung/yh820/lcd-yh820.c b/firmware/target/arm/samsung/yh820/lcd-yh820.c
index 10934621d7..d6bb2a196b 100644
--- a/firmware/target/arm/samsung/yh820/lcd-yh820.c
+++ b/firmware/target/arm/samsung/yh820/lcd-yh820.c
@@ -212,8 +212,8 @@ void lcd_set_contrast(int val)
 
 void lcd_set_invert_display(bool yesno)
 {
-    /* TODO: Implement lcd_set_invert_display() */
-    (void)yesno;
+    lcd_send_command(R_SPEC_DISPLAY_PATTERN);
+    lcd_send_command(yesno);
 }
 
 #if defined(HAVE_LCD_ENABLE)