diff --git a/day11.py b/day11.py
index de67962..f50541b 100644
--- a/day11.py
+++ b/day11.py
@@ -20,7 +20,7 @@ def flashGrid(grid: Grid) -> int:
             flashers.add(c)
 
     did_flash = set()
-    while len(flashers) > 0:
+    while flashers:
         thisFlash = flashers.pop()
         did_flash.add(thisFlash)
         grid.set(thisFlash, 0)