diff --git a/tetras_extraction/script/src/extract_mosetp.py b/tetras_extraction/script/src/extract_mosetp.py
index 96ae78331894d787aeb1753fe00825a827d382f2..adace60b1c6d913c2f9a5db24a6e48953f396ed6 100644
--- a/tetras_extraction/script/src/extract_mosetp.py
+++ b/tetras_extraction/script/src/extract_mosetp.py
@@ -1,3 +1,5 @@
+# Extract MosEtp content in Macao 1 and 2 and Act in Macao 3
+
 import re
 import subprocess