diff --git a/CAL/CalibrationProcessing/lib/processing/averaging.py b/CAL/CalibrationProcessing/lib/processing/averaging.py
index 8696ef5d6f1d6048502b53656266f11cd4fcb469..a7e515d6a0508e6e657e86fe422b754fdf06ead3 100644
--- a/CAL/CalibrationProcessing/lib/processing/averaging.py
+++ b/CAL/CalibrationProcessing/lib/processing/averaging.py
@@ -305,7 +305,7 @@ def _compute_size_of_new_array(array_size, window_size):
     If array_size % window_size = 0 it returns array_size/window_size
     otherwise it returns array_size/window_size + 1
     :param array_size: size of the input array
-    :param window_size: size of the window to impose over the input array
+    :param window_size: window size for the averaging
     :return: the new array size after averaging with the given window size
     """
     # python does not enforce the sample_width to be an integer and a value between 0 and 1