diff --git a/src/mame/video/segas32.c b/src/mame/video/segas32.c
index 8031a948b40..b04df8b8a26 100644
--- a/src/mame/video/segas32.c
+++ b/src/mame/video/segas32.c
@@ -42,7 +42,7 @@
                    ---- f--- ---- ---- : Bitmap format (1= 8bpp, 0= 4bpp)
                    ---- -t-- ---- ---- : Tile banking related
                    ---- --f- ---- ---- : 1= Global X/Y flip? (most games?)
-                   ---- ---f ---- ---- : 1= All layers Y flip (or one layer?) (Air Rescue 2nd screen)
+                   ---- ---f ---- ---- : 1= prohbit Y flip? (Air Rescue 2nd screen title, also gets set on one of the intro sequence screens)
 				   ---- ---- ---- 4--- : 1= X+Y flip for NBG3
                    ---- ---- ---- -2-- : 1= X+Y flip for NBG2
                    ---- ---- ---- --1- : 1= X+Y flip for NBG1
@@ -883,13 +883,16 @@ void segas32_state::update_tilemap_zoom(screen_device &screen, struct segas32_st
 	int global_flip = (m_system32_videoram[0x1ff00 / 2] >> 9)&1;
 	
 	int flipx = global_flip;
-	int flipy = global_flip ^ ((m_system32_videoram[0x1ff00 / 2] >> 8)&1);
+	int flipy = global_flip;
+
 	
 	int layer_flip = (m_system32_videoram[0x1ff00 / 2] >> bgnum) & 1;
 
 	flipy ^= layer_flip;
 	flipx ^= layer_flip;
 
+	if ((m_system32_videoram[0x1ff00 / 2] >> 8) & 1) flipy = 0;
+
 	/* determine the clipping */
 	clipenable = (m_system32_videoram[0x1ff02/2] >> (11 + bgnum)) & 1;
 	clipout = (m_system32_videoram[0x1ff02/2] >> (6 + bgnum)) & 1;