diff --git a/libavcodec/takdec.c b/libavcodec/takdec.c
index 8df73115d8..e555482b23 100644
--- a/libavcodec/takdec.c
+++ b/libavcodec/takdec.c
@@ -483,7 +483,7 @@ static int decode_subframe(TAKDecContext *s, int32_t *decoded,
             int v = 1 << (filter_quant - 1);
 
             if (filter_order & -16)
-                v += s->adsp.scalarproduct_int16(&s->residues[i], s->filter,
+                v += (unsigned)s->adsp.scalarproduct_int16(&s->residues[i], s->filter,
                                                  filter_order & -16);
             for (j = filter_order & -16; j < filter_order; j += 4) {
                 v += s->residues[i + j + 3] * s->filter[j + 3] +