diff --git a/cache.h b/cache.h
index 44521b2..4754ad4 100644
--- a/cache.h
+++ b/cache.h
@@ -1,3 +1,22 @@
+/*
+    Copyright © 2010 Luca Bruno
+
+    This file is part of tdpkg.
+
+    tdpkg 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.
+
+    tdpkg 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
+    along with tdpkg.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #ifndef CACHE_H
 #define CACHE_H
 
diff --git a/util.c b/util.c
index 9b0855e..93419e6 100644
--- a/util.c
+++ b/util.c
@@ -1,3 +1,22 @@
+/*
+    Copyright © 2010 Luca Bruno
+
+    This file is part of tdpkg.
+
+    tdpkg 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.
+
+    tdpkg 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
+    along with tdpkg.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #define _GNU_SOURCE
 #include <sys/stat.h>
 
diff --git a/util.h b/util.h
index defc86b..a6f6809 100644
--- a/util.h
+++ b/util.h
@@ -1,3 +1,22 @@
+/*
+    Copyright © 2010 Luca Bruno
+
+    This file is part of tdpkg.
+
+    tdpkg 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.
+
+    tdpkg 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
+    along with tdpkg.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #ifndef UTIL_H
 #define UTIL_H