diff --git a/libavutil/display.h b/libavutil/display.h
index 612faa3728..50f2b44caf 100644
--- a/libavutil/display.h
+++ b/libavutil/display.h
@@ -20,6 +20,7 @@
 
 /**
  * @file
+ * @ingroup lavu_video_display
  * Display matrix
  */