diff --git a/bin/3.1_create_gtf/Modules/Ensembl/ActivityCategorizer.py b/bin/3.1_create_gtf/Modules/Ensembl/ActivityCategorizer.py
index 2de8320..93b3558 100644
--- a/bin/3.1_create_gtf/Modules/Ensembl/ActivityCategorizer.py
+++ b/bin/3.1_create_gtf/Modules/Ensembl/ActivityCategorizer.py
@@ -84,7 +84,7 @@ def get_activity_data(self, release, organism, wd, data_dir):
 
     def generate_categorized_activity(self):
 
-        # Categorizes the Activity by config defined categories.
+        # Categorizes the activity by config defined categories.
 
         category_activity = {}