diff --git a/soitool/soi.py b/soitool/soi.py
index 36b454a53c5de44dd52988372ab5a8504595bd4c..7c478fce3ea370bbf5093eda0352074750689679 100644
--- a/soitool/soi.py
+++ b/soitool/soi.py
@@ -319,7 +319,7 @@ class SOI:
         self.algorithm_pack = algorithm_pack
         self.algorithm_sort = algorithm_sort
 
-        # prepare listener lists: list of functions to call after certain
+        # Prepare listener lists: list of functions to call after certain
         # events happen
         self.reorganization_listeners = []
         self.new_module_listeners = []