diff --git a/src/mame/video/equites.cpp b/src/mame/video/equites.cpp
index e9b41d3d65c..954b11d2540 100644
--- a/src/mame/video/equites.cpp
+++ b/src/mame/video/equites.cpp
@@ -208,8 +208,7 @@ WRITE16_MEMBER(equites_state::equites_flipw_w)
 
 WRITE8_MEMBER(equites_state::equites_flipb_w)
 {
-	// data bit is A16 (offset)
-	flip_screen_set(offset != 0);
+	flip_screen_set(data);
 }
 
 WRITE16_MEMBER(equites_state::splndrbt_bg_scrollx_w)