diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c
index 046abe272c..f828fc725b 100644
--- a/libavcodec/wavpack.c
+++ b/libavcodec/wavpack.c
@@ -837,7 +837,7 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no,
                 continue;
             }
             bytestream2_get_buffer(&gb, val, 4);
-            if (val[0] > 32) {
+            if (val[0] > 31) {
                 av_log(avctx, AV_LOG_ERROR,
                        "Invalid INT32INFO, extra_bits = %d (> 32)\n", val[0]);
                 continue;