diff --git a/gitinspector/optval.py b/gitinspector/optval.py
index 76e11b8..38f0e7c 100644
--- a/gitinspector/optval.py
+++ b/gitinspector/optval.py
@@ -15,6 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
+# along with gitinspector. If not, see <http://www.gnu.org/licenses/>.
 
 from __future__ import unicode_literals
 import getopt