diff --git a/modules/util/util.py b/modules/util/util.py
index 2ee0baefaaeb688892ad53885ae83a2a8671cf65..3b841bc7341536329a2002cb1694970b3b70b26f 100644
--- a/modules/util/util.py
+++ b/modules/util/util.py
@@ -143,6 +143,7 @@ def get_breaks(t, threshold):
 
 
 # return indexes of ts where value is within ts[i] - threshold < value < ts[i] + threshold
+# eventually, if necessary, fully vectorize (numpy) this is possible
 def get_indexes_within_threshold(ts, value, threshold):
     idx_s = []
     for k, v in enumerate(ts):