diff --git a/readme.org b/readme.org
index 542e4f6..ca61447 100644
--- a/readme.org
+++ b/readme.org
@@ -9,7 +9,7 @@
   - ~stage2-%02d.png~ is merged into ~lain.mp4~ with ~ffmpeg~
 
 * Usage
-  #+BEGIN_SRC
+  #+BEGIN_SRC:
     mpv --loop=inf --vo=vdpau lain.mp4
   #+END_SRC