diff --git a/fftools/opt_common.c b/fftools/opt_common.c
index 55d86eeb19..ae5e28a5af 100644
--- a/fftools/opt_common.c
+++ b/fftools/opt_common.c
@@ -675,6 +675,8 @@ int show_codecs(void *optctx, const char *opt, const char *arg)
            " ..V... = Video codec\n"
            " ..A... = Audio codec\n"
            " ..S... = Subtitle codec\n"
+           " ..D... = Data codec\n"
+           " ..T... = Attachment codec\n"
            " ...I.. = Intra frame-only codec\n"
            " ....L. = Lossy compression\n"
            " .....S = Lossless compression\n"