diff --git a/libavformat/latmenc.c b/libavformat/latmenc.c
index 9f5377cb37..9e85ee5672 100644
--- a/libavformat/latmenc.c
+++ b/libavformat/latmenc.c
@@ -187,7 +187,7 @@ AVOutputFormat ff_latm_muxer = {
     .name           = "latm",
     .long_name      = NULL_IF_CONFIG_SMALL("LOAS/LATM"),
     .mime_type      = "audio/MP4A-LATM",
-    .extensions     = "latm",
+    .extensions     = "latm,loas",
     .priv_data_size = sizeof(LATMContext),
     .audio_codec    = CODEC_ID_AAC,
     .video_codec    = CODEC_ID_NONE,