diff --git a/polkadot/cli/src/chain_spec.rs b/polkadot/cli/src/chain_spec.rs
index 7298a4cdff..14593c73c3 100644
--- a/polkadot/cli/src/chain_spec.rs
+++ b/polkadot/cli/src/chain_spec.rs
@@ -12,7 +12,7 @@
 // GNU General Public License for more details.
 
 // You should have received a copy of the GNU General Public License
-// along with Polkadot.  If not, see <http://www.gnu.org/licenses/>.?
+// along with Polkadot.  If not, see <http://www.gnu.org/licenses/>.
 
 //! Predefined chains.