diff --git a/km3io/daq.py b/km3io/daq.py
index b468b2ecbaa103f0bc95ba12a9348ae8e2ca409b..084e751533ea65327bf1c4cbcafae58003a03363 100644
--- a/km3io/daq.py
+++ b/km3io/daq.py
@@ -2,7 +2,7 @@ import uproot
 import numpy as np
 import numba as nb
 
-TIMESLICE_FRAME_BASKET_CACHE_SIZE = 23 * 1024**2  # [byte]
+TIMESLICE_FRAME_BASKET_CACHE_SIZE = 523 * 1024**2  # [byte]
 SUMMARYSLICE_FRAME_BASKET_CACHE_SIZE = 523 * 1024**2  # [byte]
 
 # Parameters for PMT rate conversions, since the rates in summary slices are