diff --git a/km3io/daq.py b/km3io/daq.py
index cab58672a59b87c5d48e112b11a76df61c1f89b4..c5bbd95b13d84d832a2bb45b3078694452b96165 100644
--- a/km3io/daq.py
+++ b/km3io/daq.py
@@ -4,12 +4,15 @@ import numpy as np
 
 if os.getenv("DISABLE_NUMBA"):
     print("Numba is disabled, DAQ helper functions will not work!")
+
     # A hack to to get the @vectorize, @guvectorize and nb.types silently pass.
     def dummy_decorator(*args, **kwargs):
         def decorator(f):
             def wrapper(*args, **kwargs):
                 return dummy_decorator(*args, **kwargs)
+
             return wrapper
+
         return decorator
 
     vectorize = dummy_decorator