diff --git a/src/burn/drv/pre90s/d_blktiger.cpp b/src/burn/drv/pre90s/d_blktiger.cpp
index 8e6a026a1..1fa2902a7 100644
--- a/src/burn/drv/pre90s/d_blktiger.cpp
+++ b/src/burn/drv/pre90s/d_blktiger.cpp
@@ -579,7 +579,7 @@ static void draw_bg(INT32 type, INT32 layer)
 			sx = (offs & 0x3f);
 			sy = (offs >> 6);
 
-			ofst = (sx & 0x0f) + ((sy & 0x0f) << 4) + ((sx & 0x30) << 4) + ((sy & 0x70) << 7);
+			ofst = (sx & 0x0f) + ((sy & 0x0f) << 4) + ((sx & 0x30) << 4) + ((sy & 0x70) << 6);
 		}
 
 		sx = (sx * 16) - scrollx;