diff --git a/src/data/beos_mime/application/x-xz b/src/data/beos_mime/application/x-xz
new file mode 100644
index 0000000000..f8de34dbb8
--- /dev/null
+++ b/src/data/beos_mime/application/x-xz
@@ -0,0 +1,13 @@
+
+resource(0, "BEOS:TYPE") #'MIMS' "application/x-vnd.Be-meta-mime";
+
+resource(1, "META:TYPE") "application/x-xz";
+
+resource(2, "META:SNIFF_RULE") "0.60 (0xfd377a585a00)";
+
+resource(3, "META:PREF_APP") #'MSIG' "application/x-vnd.Haiku-Expander";
+
+resource(4, "META:EXTENS") message(234) {
+	"extensions" = "xz",
+	"type" = "application/x-xz"
+};
diff --git a/src/data/beos_mime/audio/ac3 b/src/data/beos_mime/audio/ac3
index 0ff70d5c7e..c1027942f7 100644
--- a/src/data/beos_mime/audio/ac3
+++ b/src/data/beos_mime/audio/ac3
@@ -10,3 +10,6 @@ resource(3, "META:EXTENS") message(234) {
 	"type" = "audio/ac3"
 };
 
+resource(4, "META:SNIFF_RULE") "0.50 (0x0b77)";
+
+