diff --git a/apps/plugins/stats.c b/apps/plugins/stats.c
index 0a1f2e48f9..8b02152a1b 100644
--- a/apps/plugins/stats.c
+++ b/apps/plugins/stats.c
@@ -64,8 +64,8 @@ static int fontwidth, fontheight;
 
 /* TODO: Better get the exts from the filetypes var in tree.c */
 const char *music_exts[] = {"mp3","mp2","mp1","mpa","ogg",
-        "wav","flac","ac3","a52","mpc","wv","m4a","mp4","shn",
-        "aif","aiff"};
+        "wav","flac","ac3","a52","mpc","wv","m4a","m4b","mp4",
+        "shn","aif","aiff"};
 
 void prn(const char *str, int y)
 {
diff --git a/apps/tree.c b/apps/tree.c
index 24b5c2114c..17da91d72b 100644
--- a/apps/tree.c
+++ b/apps/tree.c
@@ -101,6 +101,7 @@ const struct filetype filetypes[] = {
     { "mpc", TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA },
     { "wv",  TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA },
     { "m4a", TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA },
+    { "m4b", TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA },
     { "mp4", TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA },
     { "shn", TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA },
     { "aif", TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA },
diff --git a/firmware/id3.c b/firmware/id3.c
index 74cea7f037..21c6730e29 100644
--- a/firmware/id3.c
+++ b/firmware/id3.c
@@ -85,7 +85,7 @@ const struct afmt_entry audio_formats[AFMT_NUM_CODECS] =
         AFMT_ENTRY("WV",   "wavpack", "wavpack_enc", "wv\0"       ),
     /* Apple Lossless Audio Codec */
     [AFMT_ALAC] =
-        AFMT_ENTRY("ALAC", "alac",    NULL,          "m4a\0"      ),
+        AFMT_ENTRY("ALAC", "alac",    NULL,          "m4a\0m4b\0" ),
     /* Advanced Audio Coding in M4A container */
     [AFMT_AAC] =
         AFMT_ENTRY("AAC",  "aac",     NULL,          "mp4\0"      ),