diff --git a/utils/latex-preprocessing.py b/utils/latex-preprocessing.py
index 27f61bfc..e4d56535 100755
--- a/utils/latex-preprocessing.py
+++ b/utils/latex-preprocessing.py
@@ -47,6 +47,7 @@ word_dic = {
 "X00231": "XX0231",
 #Si
 "021202": "X21202",
+### end of rules
 }
  
 # Process song files