diff --git a/geomagio/algorithm/SqDistAlgorithm.py b/geomagio/algorithm/SqDistAlgorithm.py
index 3822a73c7ac9a123746a8f155e309c1709462e81..9431dcfca3b3fd7a2b295e56311509e01e139c19 100644
--- a/geomagio/algorithm/SqDistAlgorithm.py
+++ b/geomagio/algorithm/SqDistAlgorithm.py
@@ -211,7 +211,7 @@ class SqDistAlgorithm(Algorithm):
         # - controller/get_starttime should ensure state is honored
         # - based on a TBD argument (default 30 minutes)
         #   project SQ/SV up to (default 30 minutes) behind realtime
-        #   by padding end with nan values for additive call.
+        #   by padding start/end with nan values for additive call.
 
         # trim trailing NaNs if self.trim is set
         if self.trim: