diff --git a/libavformat/img2.c b/libavformat/img2.c
index a3dcce741a..c0b5de2144 100644
--- a/libavformat/img2.c
+++ b/libavformat/img2.c
@@ -70,6 +70,7 @@ static const IdStrMap img_tags[] = {
     { CODEC_ID_SUNRAST   , "im8"},
     { CODEC_ID_SUNRAST   , "im24"},
     { CODEC_ID_SUNRAST   , "sunras"},
+    { CODEC_ID_JPEG2000  , "jp2"},
     { CODEC_ID_NONE      , NULL}
 };