diff --git a/fleep/data.json b/fleep/data.json
index a213471..ea6cef1 100644
--- a/fleep/data.json
+++ b/fleep/data.json
@@ -37,7 +37,7 @@
     {"type": "audio", "extension": "aiff", "mime": "audio/aiff", "offset": 0, "signature": ["46 4F 52 4D 00"]},
     {"type": "audio", "extension": "aac", "mime": "audio/aac", "offset": 0, "signature": ["FF F1", "FF F9"]},
     {"type": "audio", "extension": "midi", "mime": "audio/midi", "offset": 0, "signature": ["4D 54 68 64"]},
-    {"type": "audio", "extension": "mp3", "mime": "audio/mpeg", "offset": 0, "signature": ["49 44 33"]},
+    {"type": "audio", "extension": "mp3", "mime": "audio/mpeg", "offset": 0, "signature": ["49 44 33", "FF FB"]},
     {"type": "audio", "extension": "m4a", "mime": "audio/mp4", "offset": 4, "signature": ["66 74 79 70 4D 34 41 20"]},
     {"type": "audio", "extension": "oga", "mime": "audio/ogg", "offset": 0, "signature": ["4F 67 67 53 00 02 00 00"]},
     {"type": "audio", "extension": "wav", "mime": "audio/wav", "offset": 0, "signature": ["52 49 46 46"]},
diff --git a/tests/maintest.py b/tests/maintest.py
index 0e24ca4..ab96839 100644
--- a/tests/maintest.py
+++ b/tests/maintest.py
@@ -10,3 +10,14 @@
 assert info.type_matches("raster-image")
 assert info.extension_matches("png")
 assert info.mime_matches("image/png")
+
+with open("testfile-mp3", "rb") as file:
+    info = fleep.get(file.read(128))
+
+assert info.type == ["audio"]
+assert info.extension == ["mp3"]
+assert info.mime == ["audio/mpeg"]
+
+assert info.type_matches("audio")
+assert info.extension_matches("mp3")
+assert info.mime_matches("audio/mpeg")
diff --git a/tests/testfile-mp3 b/tests/testfile-mp3
new file mode 100644
index 0000000..ad19c49
Binary files /dev/null and b/tests/testfile-mp3 differ