diff --git a/32blit-pico/board/pimoroni_picovision/config.h b/32blit-pico/board/pimoroni_picovision/config.h
index 000c9195f..768280419 100644
--- a/32blit-pico/board/pimoroni_picovision/config.h
+++ b/32blit-pico/board/pimoroni_picovision/config.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#define DEFAULT_SCREEN_FORMAT PixelFormat::BGR555
+
 // native
 #define SD_CLK  10
 #define SD_CMD  11
diff --git a/32blit-pico/display_picovision.cpp b/32blit-pico/display_picovision.cpp
index 8df21a996..2472a8d81 100644
--- a/32blit-pico/display_picovision.cpp
+++ b/32blit-pico/display_picovision.cpp
@@ -371,7 +371,7 @@ bool display_render_needed() {
 }
 
 bool display_mode_supported(blit::ScreenMode new_mode, const blit::SurfaceTemplate &new_surf_template) {
-  if(new_surf_template.format != blit::PixelFormat::RGB565) // this is a lie
+  if(new_surf_template.format != blit::PixelFormat::BGR555)
     return false;
 
   if(find_resolution(new_surf_template.bounds) != -1)