diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c
index 85480be573..a04b606e81 100644
--- a/libavcodec/wavpack.c
+++ b/libavcodec/wavpack.c
@@ -128,7 +128,7 @@ static av_always_inline unsigned get_tail(GetBitContext *gb, int k)
     e   = (1 << (p + 1)) - k - 1;
     res = get_bitsz(gb, p);
     if (res >= e)
-        res = (res << 1) - e + get_bits1(gb);
+        res = res * 2U - e + get_bits1(gb);
     return res;
 }