diff --git a/src/mame/video/model1.cpp b/src/mame/video/model1.cpp
index b61db8137a6..1e88b22ec4f 100644
--- a/src/mame/video/model1.cpp
+++ b/src/mame/video/model1.cpp
@@ -1654,7 +1654,7 @@ uint32_t model1_state::screen_update_model1(screen_device &screen, bitmap_rgb32
 	view->ayys = sin(view->ayy);
 
 	screen.priority().fill(0);
-	bitmap.fill(m_palette->pen(0), cliprect);
+	bitmap.fill(m_palette->pen(0x400), cliprect);
 
 	m_tiles->draw(screen, bitmap, cliprect, 6, 0, 0);
 	m_tiles->draw(screen, bitmap, cliprect, 4, 0, 0);