diff --git a/list_todo.sh b/list_todo.sh
index 6750c0e..4220e9b 100755
--- a/list_todo.sh
+++ b/list_todo.sh
@@ -1,3 +1,18 @@
 #!/bin/zsh
+
+#C_lib Copyright (C) 2021 Wael Karram
+
+#This program is free software: you can redistribute it and/or modify
+#it under the terms of the GNU General Public License as published by
+#the Free Software Foundation, either version 3 of the License, or
+#(at your option) any later version.
+
+#This program is distributed in the hope that it will be useful,
+#but WITHOUT ANY WARRANTY; without even the implied warranty of
+#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#GNU General Public License for more details.
+
+#You should have received a copy of the GNU General Public License
+
 # This script lists files with TODO while ignoring backup files, object files and compiled executables.
 grep "TODO" . --line-number --with-filename --recursive --context=2 | sed '/~/d' | sed '/\.o/d' | sed '/\.git/d'