diff --git a/frozen/pewpew10/pew.py b/frozen/pewpew10/pew.py
index 99819cd5ae..333b193d5b 100644
--- a/frozen/pewpew10/pew.py
+++ b/frozen/pewpew10/pew.py
@@ -63,8 +63,12 @@ def show(pix):
 def tick(delay):
     global _tick
 
+    now = time.monotonic()
     _tick += delay
-    time.sleep(max(0, _tick - time.monotonic()))
+    if _tick < now:
+        _tick = now
+    else:
+        time.sleep(_tick - now)
 
 
 class GameOver(Exception):