diff --git a/libavcodec/aacenc.c b/libavcodec/aacenc.c
index 69eb51ee07..d5f8ebbda2 100644
--- a/libavcodec/aacenc.c
+++ b/libavcodec/aacenc.c
@@ -645,7 +645,7 @@ AVCodec aac_encoder = {
     aac_encode_init,
     aac_encode_frame,
     aac_encode_end,
-    .capabilities = CODEC_CAP_SMALL_LAST_FRAME | CODEC_CAP_DELAY,
+    .capabilities = CODEC_CAP_SMALL_LAST_FRAME | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL,
     .sample_fmts = (const enum SampleFormat[]){SAMPLE_FMT_S16,SAMPLE_FMT_NONE},
     .long_name = NULL_IF_CONFIG_SMALL("Advanced Audio Coding"),
 };