diff --git a/demux/demux_mkv.c b/demux/demux_mkv.c
index d564999fc6..abea342ed2 100644
--- a/demux/demux_mkv.c
+++ b/demux/demux_mkv.c
@@ -6,18 +6,18 @@
  *
  * This file is part of mpv.
  *
- * mpv 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 2 of the License, or
- * (at your option) any later version.
+ * mpv is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
  *
  * mpv 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 General Public License along
- * with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
@@ -647,7 +647,9 @@ static void parse_trackentry(struct demuxer *demuxer,
 
     if (entry->name) {
         track->name = talloc_strdup(track, entry->name);
+#if HAVE_GPL
         MP_VERBOSE(demuxer, "|  + Name: %s\n", track->name);
+#endif
     }
 
     track->type = entry->track_type;
diff --git a/waftools/generators/headers.py b/waftools/generators/headers.py
index 84f914c2c1..c7f5b48b84 100644
--- a/waftools/generators/headers.py
+++ b/waftools/generators/headers.py
@@ -29,6 +29,7 @@ def __add_mpv_defines__(ctx):
     ctx.define("CONFIGURATION", " ".join(argv))
     ctx.define("MPV_CONFDIR", ctx.env.CONFLOADDIR)
     ctx.define("FULLCONFIG", __escape_c_string(__get_features_string__(ctx)))
+    ctx.define("HAVE_GPL", 1)
 
 def configure(ctx):
     __add_mpv_defines__(ctx)