diff --git a/player/lua/assdraw.lua b/player/lua/assdraw.lua
index 7252826d9b..8ff004e04b 100644
--- a/player/lua/assdraw.lua
+++ b/player/lua/assdraw.lua
@@ -21,7 +21,7 @@ function ass_mt.draw_stop(ass)
 end
 
 function ass_mt.coord(ass, x, y)
-    local scale = math.pow(2, ass.scale - 1)
+    local scale = 2 ^ (ass.scale - 1)
     local ix = math.ceil(x * scale)
     local iy = math.ceil(y * scale)
     ass.text = string.format("%s %d %d", ass.text, ix, iy)