diff --git a/libmpdemux/extension.c b/libmpdemux/extension.c
index 2b29f70602..76d319008c 100644
--- a/libmpdemux/extension.c
+++ b/libmpdemux/extension.c
@@ -28,7 +28,7 @@
 /*
  * An autodetection based on the extension is not a good idea, but we don't care ;-)
  *
- * You should not anything here where autodetection can be easily fixed except in
+ * You should not add anything here where autodetection can be easily fixed except in
  * order to speed up auto-detection, in particular for formats that are often streamed.
  * In particular you should not normally add any DEMUXER_TYPE_LAVF, adding the
  * format to preferred_list in libmpdemux/demuxer_lavf.c will usually achieve