diff --git a/menu/drivers/rgui.c b/menu/drivers/rgui.c
index 12cbc3286e..71571bcff0 100644
--- a/menu/drivers/rgui.c
+++ b/menu/drivers/rgui.c
@@ -447,7 +447,20 @@ static uint16_t argb32_to_abgr1555(uint32_t col)
 
 #define argb32_to_pixel_platform_format(color) argb32_to_abgr1555(color)
 
-#elif defined(PSP) || defined(GEKKO)
+#elif defined(GEKKO)
+
+static uint16_t argb32_to_rgb5a3(uint32_t col)
+{
+   unsigned a = ((col >> 24) & 0xff) >> 5;
+   unsigned r = ((col >> 16) & 0xff) >> 4;
+   unsigned g = ((col >> 8) & 0xff) >> 4;
+   unsigned b = ((col & 0xff) ) >> 4;
+   return (a << 12) | (r << 8) | (g << 4) | b;
+}
+
+#define argb32_to_pixel_platform_format(color) argb32_to_rgb5a3(color)
+
+#elif defined(PSP)
 
 static uint16_t argb32_to_abgr4444(uint32_t col)
 {