diff --git a/etc/codecs.conf b/etc/codecs.conf
index 6a280fcaab..858c6960e0 100644
--- a/etc/codecs.conf
+++ b/etc/codecs.conf
@@ -1403,7 +1403,7 @@ videocodec LEADMW20
 
 videocodec lagarith
   info "Lagarith Lossless Video Codec"
-  comment "http://lags.leetcode.net/codec.html"
+  comment "http://lags.leetcode.net/codec.html, requires an MMX2 CPU."
   status working
   fourcc LAGS
   driver vfw