diff --git a/src/bomb.c b/src/bomb.c
index e303d27..130206a 100644
--- a/src/bomb.c
+++ b/src/bomb.c
@@ -42,7 +42,7 @@ draw_bomb (_bomb * bomb)
 		draw_stone ((x>>8)+1, y>>8);
 		draw_stone (x>>8, (y>>8)+1);
 		draw_stone ((x>>8)+1, (y>>8)+1);
-		gfx_AddUpdateRect (dest.x = gfx.offset.x + (x >> 8) * gfx.block.x,
+		gfx_AddUpdateRect (gfx.offset.x + (x >> 8) * gfx.block.x,
 			gfx.offset.y + (y >> 8) * gfx.block.y,
 			dest.w*2, dest.h*2);
 	} else {