diff --git a/common/av_log.c b/common/av_log.c
index c779fe9c8d..3f07106b5a 100644
--- a/common/av_log.c
+++ b/common/av_log.c
@@ -17,6 +17,8 @@
  *
  * You should have received a copy of the GNU General Public License along
  * with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Almost LGPL.
  */
 
 #include <stdlib.h>