diff --git a/src/b64dec.c b/src/b64dec.c
index 7965a305..9a7efca1 100644
--- a/src/b64dec.c
+++ b/src/b64dec.c
@@ -12,7 +12,7 @@
  * This file 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.
+ * GNU Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public License
  * along with this program; if not, see <http://www.gnu.org/licenses/>.
diff --git a/src/mbox-util.c b/src/mbox-util.c
index 83c8b5e8..656b5d7b 100644
--- a/src/mbox-util.c
+++ b/src/mbox-util.c
@@ -12,7 +12,7 @@
  * This file 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.
+ * GNU Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public License
  * along with this program; if not, see <http://www.gnu.org/licenses/>.
diff --git a/src/mbox-util.h b/src/mbox-util.h
index 3195a4d9..c5747b62 100644
--- a/src/mbox-util.h
+++ b/src/mbox-util.h
@@ -11,7 +11,7 @@
  * This file 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.
+ * GNU Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public License
  * along with this program; if not, see <http://www.gnu.org/licenses/>.