diff --git a/doc/ffmpeg-doc.texi b/doc/ffmpeg-doc.texi
index afa4d8880d..d9d30ee7f4 100644
--- a/doc/ffmpeg-doc.texi
+++ b/doc/ffmpeg-doc.texi
@@ -41,14 +41,14 @@ standard mixer.
 
 @section X11 grabbing
 
-FFmpeg can grab X11 display.
+FFmpeg can grab the X11 display.
 
 @example
 ffmpeg -f x11grab -vd x11:0.0 /tmp/out.mpg
 @end example
 
-0.0 is display.screen numbers of your X11 server.
-You can check $DISPLAY variable.
+0.0 is display.screen number of your X11 server, same as
+the DISPLAY environment variable.
 
 @section Video and Audio file format conversion