diff --git a/fb2k/foo_filetypes.h b/fb2k/foo_filetypes.h
index 4cb0f75d..b47a3f23 100644
--- a/fb2k/foo_filetypes.h
+++ b/fb2k/foo_filetypes.h
@@ -161,6 +161,7 @@ VGMSTREAM_DECLARE_FILE_TYPE("KOVS", kovs);
 VGMSTREAM_DECLARE_FILE_TYPE("KRAW", kraw);
 
 VGMSTREAM_DECLARE_FILE_TYPE("LAAC", laac);
+VGMSTREAM_DECLARE_FILE_TYPE("LAC3", lac3);
 VGMSTREAM_DECLARE_FILE_TYPE("LEG", leg);
 VGMSTREAM_DECLARE_FILE_TYPE("LMP4", lmp4);
 VGMSTREAM_DECLARE_FILE_TYPE("LOGG", logg);
diff --git a/src/formats.c b/src/formats.c
index 562b7266..84ba14e3 100644
--- a/src/formats.c
+++ b/src/formats.c
@@ -154,6 +154,7 @@ static const char* extension_list[] = {
     "kraw",
 
     "laac", //fake extension, for AAC (tri-Ace/FFmpeg)
+    "lac3", //fake extension, for AC3
     "leg",
     "lmp4", //fake extension, for MP4s
     "logg", //fake extension, for OGGs