diff --git a/libavcodec/atrac3.c b/libavcodec/atrac3.c
index 1e884a56b6..46b98d2f78 100644
--- a/libavcodec/atrac3.c
+++ b/libavcodec/atrac3.c
@@ -968,7 +968,7 @@ static av_cold int atrac3_decode_init(AVCodecContext *avctx)
         return AVERROR_INVALIDDATA;
     }
 
-    if (avctx->block_align > 1024 || avctx->block_align <= 0)
+    if (avctx->block_align > 4096 || avctx->block_align <= 0)
         return AVERROR(EINVAL);
 
     q->decoded_bytes_buffer = av_mallocz(FFALIGN(avctx->block_align, 4) +