diff --git a/ec_tools/helper.py b/ec_tools/helper.py
index ae96f71..4f52eb5 100644
--- a/ec_tools/helper.py
+++ b/ec_tools/helper.py
@@ -71,7 +71,7 @@ def determine_scan_rate(t, x):
 
 
 def find_extrema_indeces(y, mode="all"):
-    """Return the indexes of limits of cyclic voltammetry.
+    """Return the indexes of the reversal points of cyclic voltammetry.
 
     Workaround for Windows platform:
     list(array([...], dtype=int64))