diff --git a/vacation.p8 b/vacation.p8
index 5048dad..19f0c7d 100644
--- a/vacation.p8
+++ b/vacation.p8
@@ -431,7 +431,7 @@ mknew(sea)
 
 function sea:draw()
  rectfill(0, 72+wave(), 128, 84, 0)
- poke2(0x5f78, 0xFF80 >> -wave())
+ poke2(0x5f78, 0xFF00.00FF <<> wave())
 end
 
 arcade_level = {