diff --git a/32blit-pico/display.cpp b/32blit-pico/display.cpp
index 819b3307f..8f72ac20b 100644
--- a/32blit-pico/display.cpp
+++ b/32blit-pico/display.cpp
@@ -26,10 +26,7 @@ static const Size hires_screen_size(DISPLAY_WIDTH, DISPLAY_HEIGHT);
 ScreenMode cur_screen_mode = ScreenMode::lores;
 
 int get_display_page_size() {
-  if(cur_screen_mode == blit::ScreenMode::lores) // paletted is half the size
-    return blit::screen.format == blit::PixelFormat::P ? lores_page_size / 2 : lores_page_size;
-  else // paletted hires
-    return DISPLAY_WIDTH * DISPLAY_HEIGHT;
+  return cur_surf_info.bounds.area() * pixel_format_stride[int(cur_surf_info.format)];
 }
 
 // blit api