diff --git a/gwpy/timeseries/core.py b/gwpy/timeseries/core.py
index <HASH>..<HASH> 100644
--- a/gwpy/timeseries/core.py
+++ b/gwpy/timeseries/core.py
@@ -1296,4 +1296,3 @@ class TimeSeriesBaseList(list):
 
     def __getslice__(self, i, j):
         return type(self)(*super(TimeSeriesBaseList, self).__getslice__(i, j))
-    __getslice__.__doc__ = list.__getslice__.__doc__
TimeSeriesBaseList.__getslice__: removed __doc__

in python3 `list` doesn't have `__getslice__`, and we don't really need a docstring anyway