diff --git a/src/data/beos_mime/image/jp2 b/src/data/beos_mime/image/jp2
index 251f87af6c..72d43879af 100644
--- a/src/data/beos_mime/image/jp2
+++ b/src/data/beos_mime/image/jp2
@@ -8,5 +8,6 @@ resource(2, "META:S:DESC") #'MSDC' "JPEG2000 image";
 resource(3, "META:EXTENS") message(234) {
 	"extensions" = "jp2",
 	"extensions" = "jpg2",
+	"extensions" = "j2k",
 	"type" = "image/jp2"
 };